Tea Advisory Panel

Media Centre

Why tea matters...

Black tea has many health and well-being benefits, which most of us are completely unaware of. In addition, some of us are confused by various 'old wives tales' associated with drinking tea.

Tea, the world's favourite drink, can help you maintain your health as part of a balanced diet and healthy, active lifestyle. The antioxidants, hydrating properties, caffeine and fluoride found in tea mean that you need never feel guilty about reaching for the teapot.

The UK drinks 165 million cups of tea a day, with about 70% of the population drinking tea regularly.

Articles and research (217)

Title Date Category Description  
New research continues to reaffirm the health benefits of tea 12th May '17 Health & Wellbeing Evidence continues to show the many health benefits packed into a cup of tea.
Teas, Infusions and the Latest on Health 24th Apr '17 Health & Wellbeing Tea in all its forms remains Britain’s favourite drink. While we all seem to love it, it is also great for our wellbeing.
Tea up for a healthy lifestyle 13th Jan '17 Health & Wellbeing Tea is the most commonly consumed beverage in the world after water. In fact, in the UK it has been drunk for more than 400 years.
Hydration advice awash with dubious claims a cuppa is a tea-riffic way to refresh. 13th Jan '17 Hydration Persistent low-level dehydration increases the risk of heart disease and stroke and temporary dips can trigger headaches fatigue and impaired physical and mental performance.
Which are the best drinks to meet your fluid requirements? 29th Dec '16 Hydration Cheap, freely available and calorie-free, tap water should be your first choice of fluid throughout the day.
Fluoride content of UK retail tea: impact of brew time on teas of different quality 21st Dec '16 Fluoride Tea is a natural source of fluoride (F-) and is a major contributor to adult F- intakes in the UK. In addition, F- has well established oral health benefits.
Tea, hydration and fluoride 8th Dec '16 Fluoride Media concerns about caffeine and fluoride have led to questions about the suitability of tea as a source of fluid and its role in hydration.
Tea up for good health 5th Dec '16 Heart Health Drinking tea is associated with reduced risk of mortality, cardiovascular disease (CVD) and cancer according to a new meta-analysis published in the British Journal of Nutrition.
TEA UP. Two cups of tea a day reduces mortality by 40% 3rd Dec '16 Health & Wellbeing Two cups of tea a day is associated with a 40% reduction in risk of mortality from all causes according to new research just published in the American Journal of Nutrition.
New evidence: black tea may help prevent type 2 diabetes 28th Nov '16 Diabetes Black tea polyphenols may help to prevent type 2 diabetes according to two new studies just out.
Brain up with tea 19th Nov '16 Alertness / Fatigue Both black and green tea are linked with improved cognitive function according to a new study, just published.
Black tea associated with 30% reduced risk of fracture 3rd Sep '16 Health & Wellbeing Consumption of three or more cups of black tea daily is associated with a 30% reduced risk of osteoporotic fracture according to a new Australian study, just published.
More evidence on the cardiovascular benefits of tea 20th Aug '16 Heart Health Black tea has protective effects on the blood vessels according to a new study published in the journal, Nutrients, this week.
Fluoride content of UK retail tea 31st Jul '16 Fluoride Impact on brew time on teas of different value
New British Medical Journal study links flavonoids with slower weight gain 31st Jul '16 Health & Wellbeing Natural plant compounds found in tea, as well as certain fruits, may be the answer to expanding middle aged waistlines, according to a new study just published in British Medical Journal.
Four cups of tea daily to protect your smile 30th Jun '16 Fluoride A new study, to be published in Nutrition Bulletin, has revealed that tea could be the top drink for great dental health thanks to its fluoride content.
White tea could help prevent diabetes related effects in the brain 22nd Jun '16 Diabetes Daily consumption of white tea could prevent diabetes related effects in the brain according to a new study just out in the British Journal of Nutrition.
Is black tea consumption associated with a lower risk of cardiovascular disease and type 2 diabetes? 20th Jun '16 Heart Health Type 2 diabetes mellitus and cardiovascular disease represent major causes of morbidity, which impact greatly on healthcare expenditure.
Fluoride content of UK retail tea: impact of brew time on teas of different value 19th Jun '16 Fluoride Tea is a natural source of fluoride (F-) and a major contributor to UK F- intakes. F- has well established oral health benefits.
A randomised cross-over trial to evaluate the impact of tea on measures of hydration 18th Jun '16 Hydration There is a view in the popular press that caffeinated drinks, such as tea, have an adverse effect on hydration.
Emerging evidence for tea benefits 16th Jun '16 Health & Wellbeing Tea is the most commonly consumed beverage in the world, after water. Associations between regular tea drinking and a reduced risk of coronary heart disease are well established.
A cuppa is TEA-RIFFIC for teeth 15th Jun '16 Fluoride TEA is an important source of fluoride and the longer you leave it to brew, the better it is for your teeth. That’s according to new research which has just been presented at the annual Nutrition Society Meeting in Cork.
Reduced Mortality 13th Jun '16 Heart Health It’s usually not until a medical wobble arises that you begin to think about your own mortality and how your lifestyle feeds into this, even as a health professional.
Diabetes 12th Jun '16 Diabetes Diabetes is one of the fastest growing health threats of our time and a major public health issue.
Cholesterol 11th Jun '16 Heart Health Most of us have heard of ‘good’ HDL (high-density lipoprotein) and so called ‘bad’ LDL (low-density lipoprotein cholesterol).
Weight 10th Jun '16 Health & Wellbeing When we think about managing our weight what we eat may jump into our minds first, followed by the need to exercise.
Heart Health 9th Jun '16 Heart Health Tea has been drunk for thousands of centuries and is renowned for its health benefits, especially in the Far East. Tea, according to the evidence-base also appears to be a great tonic when it comes to the prevention of cardiovascular diseases, especiall
Cancer - the facts 8th Jun '16 Health & Wellbeing The causes of cancer are multi-faceted, with inherited genes, workplace causes, sun and pollution exposure, hormones, infection exposure, smoking, alcohol intake, diet, physical activity levels and body weight all posing a potential risk.
Bone Health 7th Jun '16 Fluoride We are an ageing population and poor bone health is something that can affect us all. As I get older I am certainly become more aware of my own bone health.
It's always time for tea 7th Jun '16 Health & Wellbeing Around 40% of the nation’s hydration comes in a cup of tea and this great British beverage is an important source of health-enhancing minerals, polyphenols and flavanols.
Fluoride content of UK retail tea. 6th Jun '16 Fluoride Measured fluoride in 38 retail tea bags, concluding that economy versions represented a risk...
Blood Pressure 6th Jun '16 Heart Health High blood pressure is often referred to as a "silent killer". Lowering blood pressure can make a huge difference to health, preventing the onset of a stroke of heart attack.
Tea: hydration and other health benefits 3rd May '16 Hydration There is concern in some health profession literature and the wider media that caffeinated beverages may not support normal hydration.
Tea – Refreshed wellbeing. 1st May '16 Hydration With summer around the corner (we hope!), now is the time to think about good hydration. Hydration is vital throughout the year because it supports the health of all our organs, particularly the kidneys and the skin.
A Cuppa is Tea-riffic for teeth 12th Aug '15 Fluoride TEA is an important source of fluoride and the longer you leave it to brew, the better it is for your teeth. That’s according to new research which has just been presented at the annual Nutrition Society Meeting in Cork.
Tea - Refreshed Wellbeing 11th Aug '15 Health & Wellbeing All your summer health and hydration needs in a cuppa
Two cups of tea a day associated with a 40% reduction in mortality. 11th Jul '15 Heart Health Two cups of tea a day is associated with a 40% reduction in risk of mortality from all causes according to new research just published in the American Journal of Nutrition.
Brain up with tea: new study shows how tea improves brain function 29th May '15 Alertness / Fatigue Both black and green tea are linked with improved cognitive function according to a new study, just published.
Sorting fact from fiction: Fluoride in tea is good for you 31st Jan '15 Fluoride Current tea consumption is unlikely to provide fluoride intakes that exceed safe limits for adults and children according to a new study just presented to the Nutrition Society by Dr Carrie Ruxton, independent public health nutritionist.
A BeauTea Essential - Beauty Benefits of Tea for Summer Health 25th Jul '14 Health & Wellbeing Tea is the most commonly consumed beverage in the world after water. In the UK it has been drunk for over 350 years. Today, 77% of British adults drink tea and of the tea consumed in the UK, 95% is black tea.
Tea Drinkers are at Reduced Risk of Breast Cancer 24th Jul '14 Health & Wellbeing Cancer is a very complex medical subject but a new systematic review and meta-analysis builds on previous research and shows how tea drinkers could have less of a breast cancer risk. The aim of this latest analysis was to evaluate the links between tea c
Drinking Tea is Associated with Reduced Stiffness of the Arteries 25th Feb '14 Heart Health Drinking more than three cups of tea daily is associated with reduced stiffness of the arteries according to a new study published in PLOS one.
New and Emerging Health Benefits of Tea Britain's Favourite Beverage 25th Sep '13 Heart Health Tea drinking is linked with new and emerging health benefits according to a new research review by Dr Carrie Ruxton, independent dietitian and public health nutritionist.
Black Tea is Associated with Reduced Risk of Advanced Prostate Cancer 26th Aug '13 Health & Wellbeing Five or more cups of black tea each day reduces the risk of advanced prostate cancer by one third according to a new Dutch study, just out.
Black Tea reduces variability in blood pressure 25th Aug '13 Heart Health Three cups of black tea each day can reduce the variability in blood pressure according to a newly published study.
Tea Drinking linked with reduced risk of oral cancer 18th Jul '13 Health & Wellbeing Tea drinking may reduce the risk of oral cancer according to a new study.
Tea drinking linked with reduced cognitive decline 18th Jul '13 Alertness / Fatigue Tea drinking is linked with lower cognitive decline according to a new US meta-analysis just published by the American Society of Nutrition.
The suitability of caffeinated drinks for children. 19th Jun '13 Caffeine The increased availability of caffeinated drinks raises questions about the level of caffeine that is appropriate for children, as well as the benefits and risks associated with their consumption.
What's Healthier than a good cuppa? 12th Nov '12 Health & Wellbeing Tea is the number one drink for health. It's also our absolute favourite according to a recent BBC programme. Nothing we eat or drink in Britain comes close. We drink 165 million cups every day. That's 15 billion litres of tea every year. The good new
7-day Superfoods Cleansing Diet 6th Jan '12 Health & Wellbeing With the festive period and its over-indulgence firmly in the past, now is the time to drag out those New Year resolutions and kick start your healthy eating plan.
New research reveals yet more health benefits of black tea. 7th Jul '11 Health & Wellbeing New mechanisms by which black tea could help to prevent cancer have been revealed in two recent studies.
The benefits of black tea continually confirmed 7th Jun '11 Alertness / Fatigue Two studies just published provide further evidence of black tea's health benefits. One study revealed that black tea ingredients improve cognitive function, while the other found that black tea polyphenols could prevent obesity.
More evidence confirming protective effect of black tea in heart health 7th Jun '11 Heart Health Two new peer-reviewed publications have provided yet more evidence on the health benefits of black tea.
New study finds that black tea benefits the health of our pearly whites 7th Jun '11 Health & Wellbeing An ingredient in black tea may play a role in preventing periodontal disease (advanced gum disease) according to a newly published study just out.
Tea is as good as water in keeping the body hydrated - new clinical study published in leading scien 7th Jun '11 Hydration Drinking four to six mugs of tea a day is just as good as drinking a litre of water when it comes to keeping the body hydrated, according to a groundbreaking clinical study published in the scientific journal, The British Journal of Nutrition.
Black tea is not signicantly different from water in the maintenance of normal hydration in human subjects 7th Jun '11 TAP Published Papers There is a belief that caffeinated drinks, such as tea, may adversely affect hydration. This was investigated in a randomised controlled trial.
Black tea is not significantly different from water in the maintenance of normal hydration in human 20th Jan '11 Hydration It is often claimed in the media that caffeinated drinks, such as tea, can adversely affect normal hydration.
More evidence linking black tea with cardiovascular health 29th Oct '10 Heart Health More evidence that black tea consumption reduces the risk of cardiovascular disease has emerged from a new review published by researchers from the Australia.
A randomised cross-over trial to evaluate the impact of tea on measures of hydration 17th Jun '10 TAP Reports There is a view in the popular press that caffeinated drinks, such as tea, have an adverse effect on hydration.
Tea is just as good at keeping you hydrated, finds new study 17th Jun '10 Hydration Drinking tea is just as good as water when it comes to keeping the body hydrated, an important new clinical study commissioned by the Tea Advisory Service (TAP), has found.
Exercise, Tea Consumption, and Depression Among Breast Cancer Survivors 8th Feb '10 Independent Research Purpose: To examine the association of lifestyle factors and supplement use with depression among breast cancer survivors
Coffee and tea consumption and risk of type 2 diabetes 5th Feb '10 Independent Research The aim of this study was to examine the association of consumption of coffee and tea, separately and in total, with risk of type 2 diabetes and which factors mediate these relations.
Tea consumption and risk of endometrial cancer: a metaanalysis 5th Feb '10 Independent Research The objective of the study was to assess the association between tea consumption and endometrial cancer.
Protective role of tea catechins on erythrocytes subjected to oxidative stress during human aging 5th Feb '10 Independent Research Antioxidant effect of tea catechins has been shown in many epidemiological studies.
Modulatory effects of black v. green tea aqueous extract on hyperglycaemia, hyperlipidaemia and liver dysfunction in diabetic and obese rat models 5th Feb '10 Independent Research Cardiovascular complications are a major cause of morbidity and mortality in patients with diabetes, obesity and the metabolic syndrome.
Coffee, Decaffeinated Coffee, and Tea Consumption in Relation to Incident Type 2 Diabetes Mellitus 5th Feb '10 Independent Research Coffee consumption has been reported to be inversely associated with risk of type 2 diabetes mellitus.
Green and black tea extracts inhibit HMG-CoA reductase and activate AMP kinase to decrease cholesterol synthesis in hepatoma cells 5th Feb '10 Independent Research Recent studies have demonstrated that green and black tea consumption can lower serum cholesterol in animals and in man, and suppression of hepatic cholesterol synthesis is suggested to contribute to this effect.
L-theanine and caffeine improve task switching but not intersensory attention or subjective alertness 5th Feb '10 Independent Research Tea ingredients L-theanine and caffeine have repeatedly been shown to deliver unique cognitive benefits when consumed in combination.
Coffee, Tea, Caffeine Intake, and Risk of Adult Glioma in Three Prospective Cohort Studies 5th Feb '10 Independent Research Current data suggest that caffeinated beverages may be associated with lower risk of glioma.
Addition of whole, semiskimmed, and skimmed bovine milk reduces the total antioxidant capacity of black tea 5th Feb '10 Independent Research Epidemiological studies have shown that populations consuming fruits, vegetables, tea, cocoa, and red wine have lower incidences of cardiovascular disease, certain cancers, and eye disease.
Black tea reduces uric acid and C-reactive protein levels in humans susceptible to cardiovascular diseases 5th Feb '10 Independent Research The health benefïts of tea and tea extracts have been well documented, especially with respect to chemo preventive effects on cancers, cardiovasculardiseases, and inflammation.
Dietary avonoid intake and colorectal cancer: a case-control study 5th Feb '10 Independent Research Diets rich in avonoids may reduce the risk of developing colorectal cancer.
Major new study reveals power of tea to boost heart health 27th Jan '10 Heart Health Drinking 3 or more cups of tea a day can help play a role in warding off heart disease and may also boost brain function, a major new scientific investigation has found.
Drinking tea can lower risk of diabetes 27th Jan '10 Diabetes Drinking at least three cups of tea a day is linked with reduced risk of type 2 diabetes, according to a new Dutch study published this month.
New review shows that caffeinated drinks can benefit health 27th Jan '10 Health & Wellbeing Caffeinated drinks, such as tea, coffee and cocoa, can make an important contribution to good health, says a new research review just published.
Drinking black tea is linked with better heart function 27th Jan '10 Heart Health Black tea consumption, as part of a healthy dietary pattern, is linked with better heart function according to a new study published in the American Journal of Clinical Nutrition.
More research showing tea can reduce the risk of diabetes 12th Dec '09 Diabetes Drinking more than three cups of tea a day reduces the risk of diabetes according to an analysis of studies published in the December 14/28 issue of Archives of Internal Medicine.
TAP Bulletin November 2009 26th Nov '09 Health & Wellbeing Consuming one to eight cups of black tea each day is associated with a reduced risk of chronic disease, according to a new research review conducted by Dr Carrie Ruxton on behalf of the Tea Advisory Panel and published in Nutrition & Food Science Journal.
Risk factors for low bone mass in healthy 40-60 year old women: A systematic review of the literature 24th Sep '09 Independent Research E. J. Waugh, M.-A. Lam, G. A. Hawker, J. McGowan, A. Papaioannou, A. M. Cheung, A. B. Hodsman,W. D. Leslie, K. Siminoski and S. A. Jama.
Tea and Coffee: A Century of Progress 24th Sep '09 Independent Research Yu Wang; Chi-Tang Ho.
Purified black tea theaflavins and theaflavins/catechin supplements 24th Sep '09 TAP Published Papers Purified black tea theaflavins and theaflavins/catechin supplements did not affect serum lipids in healthy individuals with mildly to moderately elevated cholesterol concentrations
Green tea, black tea consumption and risk of lung cancer: A meta-analysis 24th Sep '09 Independent Research Naping Tang et al.
Caffeine, cognitive failures and health in a non-working community sample 24th Sep '09 Independent Research Andrew P Smith
Antifungal Activity of Black Tea Polyphenols (Catechins and Theaflavins) against Candida Species 24th Sep '09 Independent Research M.A.M. Sitheequea, G.J. Panagodaa, J. Yauc, A.M.T. Amarakoonb, U.R.N. Udagamab, L. P. Samaranayakec
A Thought on the Biological Activities of Black Tea 24th Sep '09 Independent Research Authors: Vasundhara Sharma; L. Jagan Mohan Rao.
Effects of Sri Lankan Black Tea (Camellia sinensis L.) on Pregnancy of Rats 24th Sep '09 Independent Research Wanigasekera D. Ratnasooriya and Thimbiripalage S. P. Fernando Department of Zoology, University of Colombo, Colombo, Sri Lanka.
Parkinson's Disease and Tea: A Quantitative Review 24th Sep '09 Independent Research Josa´ Luis Barranco Quintana et al.
Interaction Between Warfarin and Black Tea 24th Sep '09 Independent Research Debra L Parker, PharmD CACP CDE CLS; Teresa K Hoffmann, PharmD CACP CDE CLS; Mary Ann Tucker, PharmD; David J Meier, MD
Long-Term Tea Intake is Associated with Reduced Prevalence of (Type 2) Diabetes Mellitus among Elderly People from Mediterranean Islands: MEDIS Epidemiological Study 24th Sep '09 Independent Research Demosthenes B. Panagiotakos , Christos Lionis,Akis Zeimbekis,Kyriaki Gelastopoulou,Natassa Papairakleous,Undurti N. Das,and Evangelos Polychronopoulos.
Coffee, Decaffeinated Coffee, Tea Intake, and Risk of Renal Cell Cancer 24th Sep '09 Independent Research Maurizio Montella; Irene Tramacere; Alessandra Tavani; Silvano Gallus; Anna Crispo; Renato Talamini; Luigino Dal Maso; Valerio Ramazzotti; Carlotta Galeone; Silvia Franceschi; Carlo La Vecchia
Higher regular coffee and tea consumption is associated with reduced endometrial cancer risk 24th Sep '09 Independent Research Susan E. McCann 1, Michael Yeh, Kerry Rodabaugh, Kirsten B. Moysich.
Dietary pattern, the metabolic syndrome, and left ventricular mass and systolic function: the Multi-Ethnic Study of Atherosclerosis 24th Sep '09 Independent Research Longjian Liu, Jennifer A Nettleton, Alain G Bertoni, David A Bluemke, João A Lima and Moyses Szklo.
Tea Consumption and Ischemic Stroke Risk: A Case-Control Study in Southern China 24th Sep '09 Independent Research Wenbin Liang, MPH; Andy H. Lee, PhD; Colin W. Binns, MBBS, PhD; Rongsheng Huang, MBBS ; Delong Hu, MD Qingkun Zhou, MD
Coffee and black tea consumption and risk of breast cancer by estrogen and progesterone receptor status in a Swedish cohort 24th Sep '09 Independent Research Susanna C. Larsson, Leif Bergkvist and Alicja Wolk
Tea Consumption and Risk of Breast Cancer 24th Sep '09 Independent Research Nagi Kumar, Linda Titus-Ernstoff, Polly A. Newcomb,Amy Trentham-Dietz, Gabriella Anic and Kathleen M. Egan.
Tea drinking habits and oesophageal cancer in a high risk area in northern Iran: population based case-controlled study 24th Sep '09 Independent Research Islami et al.
Polyphenolic beverages reduce initial bacterial adherence to enamel in situ 24th Sep '09 Independent Research C. Hannig, S. Sorg, B. Spitzmuller, M. Hannig, A. Al-Ahmad.
Black tea consumption dose-dependently improves flowmediated dilation in healthy males 24th Sep '09 Independent Research Grassi, Davide; Mulder, Theo PJ; Draijer, Richard; Desideri, Giovambattista; Molhuizen, Henri OF; Ferri, Claudio
Coffee, black tea and risk of gastric cancer 24th Sep '09 Independent Research Background: To provide information about the association of coffee, black tea with gastric cancer risk.
Anti-cariogenic effects of polyphenols from plant stimulant beverages (cocoa, coffee, tea) 24th Sep '09 Independent Research Gianmaria F. Ferrazzanoa, Ivana Amatoa, Aniello Ingenitoa, Antonino De Nataleb and Antonino Pollioc.
Protective action of aqueous black tea (Camellia sinensis) extract (BTE) against ovariectomy-induced oxidative stress of mononuclear cells and its associated progression of bone loss 24th Sep '09 Independent Research Asankur Sekhar Das, Maitrayee Mukherjee, Dolan Das, Chandan Mitra * Department of Physiology, Presidency College, Kolkata 700 073, India
Role of oxidation-triggered activation of JNK and p38 MAPK in black tea polyphenols induced apoptotic death of A375 cells 24th Sep '09 Independent Research Udayan Bhattacharya, Babli Halder, Sibabrata Mukhopadhyay and Ashok K. Giri, Molecular and Human Genetics Division ;Department of Chemistry, Indian Institute of Chemical Biology, Kolkata, India
Green and Black Tea Consumption and Risk of Stroke 16th Sep '09 Independent Research Experimental models of stroke provide consistent evidence of smaller stroke volumes in animals ingesting tea components or tea extracts.
The neuroprotective effects of caffeine: a prospective population study (the Three City Study) 5th Sep '09 Health Research Archive To examine the association between caffeine intake, cognitive decline, and incident dementia in a community-based sample of subjects aged 65 years and over.
Three cups of tea a day could help prevent stroke 20th May '09 Heart Health Daily consumption of three cups of tea a day could reduce the risk of stroke and death from stroke, according to the findings of a recent meta-analysis. The meta-analysis included 10 studies from six different countries: China, Japan, Finland, the Netherl
Tea reduces risk of certain types of stroke in male smokers 20th May '09 Heart Health Two or more cups of tea a day reduced risk of cerebral infarction (a certain type of stroke) by 21 per cent in men who smoke according to a recent study. Dr Hood of the Tea Advisory Panel comments on the 13 year study.
Tea is good for dental health 20th May '09 Health & Wellbeing Tea has no erosive action on the teeth according to a recent study. The study found that tea, like plain water, has no erosive potential. TAP member Dr Carrie Ruxton explains the study's findings.
21st Century ills of fatigue and bad mood linked to diet and hydration 20th May '09 Hydration More than half of us are fooling ourselves that we eat and drink healthily and, as a result, suffering fatigue and bad moods, according to a new study commissioned by the Tea Advisory Panel.
Melinda's love of a cuppa is down to health 20th May '09 Health & Wellbeing Melinda Messenger is working with the Tea Advisory Panel to talk about the importance of healthy eating and drinking and how the good ol' British cuppa may help people's health and wellbeing.
Nine out of 10 Britons risk mental and physical health problems caused by poor diet 20th May '09 Health & Wellbeing The vast majority of people in the UK are risking potentially serious mental and physical health problems caused by eating the wrong foods and not drinking enough fluids, according to a new study by the Tea Advisory Panel. The survey found that people eat
How black tea works to reduce heart disease 20th May '09 Heart Health A new study just out has identified that black tea could reduce heart disease. TAP member Dr Carrie Ruxton, an independent nutritionist, explains what this study shows and puts it into context.
Tea heart health benefits clear, new review shows 20th May '09 Heart Health Drinking four cups of tea a day could cut the risk of a heart attack, keeps your body's hydration needs at a healthy, optimum level, and improves your alertness and mood elevation, according to a major literature review, commissioned by the Tea Advisory
The health effects of black tea and flavonoids 20th May '09 TAP Published Papers Publisher: Nutrition & Food Science; June 2009
Author: Dr Carrie Ruxton
Date: 2009
21st Century ills 20th May '09 TAP Reports Publisher: Tea Advisory Panel
Date: 2008 - Summer
Black tea and health 20th May '09 TAP Published Papers Publisher: British Nutrition Foundation
Journal: Nutrition Bulletin, 33, 91-101
Author: Dr Carrie Ruxton
Date: 2008
TAP Bulletin May 2009 18th May '09 Health & Wellbeing Tea and Caffeine
Major new study reveals power of tea to boost heart health 13th May '09 Heart Health Drinking 3 or more cups of tea a day can help play a role in warding off heart disease and may also boost brain function, a major new scientific investigation has found.
New insights into black tea ingredients involved in protection against cardiovascular disease 31st Mar '09 Heart Health According to a new study, black tea is as potent as green tea in promoting beneficial effects in the cardiovascular system. TAP member, independent nutritionist Dr Carrie Ruxton, explains what this study shows and provides background information.
Black tea linked to a reduced risk of Ovarian Cancer 26th Feb '09 Health & Wellbeing According to latest research from America, black tea has been found to reduce the possible risk of ovarian cancer. The study found that women drinking two or more cups of black tea a day had a 30% reduction in risk of ovarian cancer.
Clinical proof of the invigorating benefits of tea 13th Feb '09 Alertness / Fatigue A new research study has shown that tea really can be a pick-me-up - with the caffeine consumed by typical British tea-drinkers benefiting both mind and body without causing health concerns.
Drinking tea could be associated with better mental ability in older people 28th Jan '09 Alertness / Fatigue Regular consumption of tea could be associated with better cognitive performance according to a new Norwegian study involving over 2000 participants. Dr Catherine Hood, TAP member, comments on the study and what it means.
TAP Bulletin October 2008 24th Oct '08 Health & Wellbeing Younger people putting their health at risk through poor diet and low fluid intake, study shows.
The acute effect of green tea consumption on endothelial function in healthy individuals 16th Jun '08 Health Research Archive Tea consumption is associated with decreased cardiovascular risk.
Radical-scavenging abilities and antioxidant properties of theaflavins and their gallate esters in H(2)O(2)-mediated oxidative damage system in the HPF-1 cells 16th Jun '08 Health Research Archive The antioxidant properties of theaflavins and their gallate esters, namely theaflavin (TF1), theaflavin-3(3')-gallate (TF2) and theaflavin-3,3'-digallate (TF3) were investigated by comparing with epigallocatechin gallate (EGCG).
Green tea consumption and liver disease: a systematic review 16th Jun '08 Health Research Archive Objectives: To present the effect of green tea consumption against liver disease.
Association between soy and green tea (Camellia sinensis) diminishes hypercholesterolemia and increases total plasma antioxidant potential in dyslipidemic subjects 16th Jun '08 Health Research Archive OBJECTIVE: To evaluate the hypolipemic and antioxidant effects of soy and green tea alone and/or in association in dyslipidemic subjects.
Smoking and tea consumption delay onset of Parkinson's disease 16th Jun '08 Health Research Archive Cigarette smoking, coffee and tea drinking may protect against Parkinson's disease (PD).
Health effects of quercetin: From antioxidant to nutraceutical 16th Jun '08 Health Research Archive Quercetin, a member of the flavonoids family, is one of the most prominent dietary antioxidants.
Iron absorption in young Indian women: the interaction of iron status with the influence of tea and ascorbic acid 16th Jun '08 Health Research Archive Ascorbic acid (AA) enhances and tea inhibits iron absorption. It is unclear whether iron status influences the magnitude of this effect.
Coffee and tea consumption and risk of stroke subtypes in male smokers 16th Jun '08 Health Research Archive offee and tea consumption could potentially reduce the risk of stroke because these beverages have antioxidant properties, and coffee may improve insulin sensitivity.
Dietary flavonoid intake and lung cancer--a population-based case-control study 16th Jun '08 Health Research Archive This study investigated the effects of the consumption of green tea (GT) for 7 d on biomarkers of oxidative stress in young men undergoing resistance exercise.
Dietary flavonoid intake and lung cancer--a population-based case-control study 16th Jun '08 Health Research Archive Laboratory studies suggest that flavonoids are antimutagenic and anticarcinogenic.
Coffee, tea, caffeine and risk of breast cancer: a 22-year follow-up 16th Jun '08 Health Research Archive The relation between consumption of coffee, tea and caffeine and risk of breast cancer remains unsettled.
Habitual caffeine intake in women of childbearing age 16th Jun '08 Health Research Archive For women, delayed conception and recurrent pregnant loss are just a few of the health implications associated with a caffeine-rich diet (Mol. Hum. Reprod., 11, 357).
Differential effects of black versus green tea on risk of Parkinson's disease in the Singapore Chinese Health Study 10th Jun '08 Health Research Archive Data from Asian populations on dietary and lifestyle factors associated with Parkinson's disease are sparse.
TAP Bulletin April 2008 25th Apr '08 Hydration Tea and Hydration.
Dietary strategies for improving post-prandial glucose, lipids, inflammation, and cardiovascular health 10th Apr '08 Health Research Archive The highly processed, calorie-dense, nutrient-depleted diet favored in the current American culture frequently leads to exaggerated supraphysiological post-prandial spikes in blood glucose and lipids.
Diet and prostate cancer risk reduction 10th Apr '08 Health Research Archive Prostate cancer is the most commonly diagnosed malignancy in males.
Black tea polyphenols mimic insulin/insulin-like growth factor-1 signalling to the longevity factor FOXO1a 10th Apr '08 Health Research Archive In vertebrates and invertebrates, relationships between diet and health are controlled by a conserved signalling pathway responsive to insulin-like ligands.
Accumulation and distribution of arsenic and cadmium by tea plants 10th Apr '08 Health Research Archive It is important to research the rules about accumulation and distribution of arsenic and cadmium by tea plants, which will give us some scientific ideas about how to control the contents of arsenic and cadmium in tea.
Catechin Safely Improved Higher Levels of Fatness, Blood Pressure, and Cholesterol in Children 10th Apr '08 Health Research Archive The purpose of this study was to evaluate the effects of a catechin-rich beverage on body fat and cardiovascular disease risk factors in obese children and to verify the safety of its use.
Coffee, tea, colas, and risk of epithelial ovarian cancer 10th Apr '08 Health Research Archive Associations of coffee, tea, and other caffeinated beverages with ovarian cancer risk remain uncertain.
Dietary and nutritional biomarkers of lens degeneration, oxidative stress and micronutrient inadequacies in Indian cataract patients 10th Apr '08 Health Research Archive Habitual food and nutrient intakes of 140 Indian cataract patients and 100 age- and sex-matched controls (50-75years), from high income group and low income groups, were assessed.
Consumption of green tea favorably affects oxidative stress markers in weight-trained men 10th Apr '08 Health Research Archive his study investigated the effects of the consumption of green tea (GT) for 7 d on biomarkers of oxidative stress in young men undergoing resistance exercise.
Dietary flavonoid intake and lung cancer-A population-based case-control study 10th Apr '08 Health Research Archive Laboratory studies suggest that flavonoids are antimutagenic and anticarcinogenic.
Prospective study of coffee and tea consumption in relation to risk of type 2 diabetes mellitus among men and women: The Whitehall II study 10th Apr '08 Health Research Archive At least fourteen cohort studies have documented an inverse association between coffee consumption and risk of type 2 diabetes.
Association between consumption of black tea and iron status in adult Africans in the North West Province: the THUSA study 10th Apr '08 Health Research Archive The association between black tea consumption and iron status was investigated in a sample of African adults participating in the cross-sectional THUSA (Transition and Health during Urbanization of South Africans) study in the North West Province, South A
Plasma tea polyphenols and gastric cancer risk: a case-control study nested in a large population-based prospective study in Japan 10th Apr '08 Health Research Archive Abundant in vitro and animal studies have shown a protective effect of green tea against various types of cancer, but the evidence from epidemiologic studies is inconclusive.
Caffeine Consumption and the Risk of Primary Open - Angle Glaucoma: A Prospective Cohort Study 10th Apr '08 Health Research Archive We investigated whether caffeine, which transiently increases intraocular pressure (IOP) is associated with risk of primary open-angle glaucoma (POAG).
L-theanine intervention enhances human gammadelta T lymphocyte function 10th Apr '08 Health Research Archive Human gammadelta T lymphocytes are a subset of T cells and are a first line of defense against microbes and tumors.
Psychological effects of dietary components of tea: caffeine and L-theanine 10th Apr '08 Health Research Archive This review summarizes the literature on the association between two dietary components of tea, caffeine and L-theanine, and the psychological outcomes of consumption; it also identifies areas for future research.
Effects of black and green tea consumption on blood glucose levels in non-obese elderly men and women from Mediterranean Islands (MEDIS epidemiological study 10th Apr '08 Health Research Archive Obesity and diabetes are metabolic disorders that affect a large amount of the elderly population and are related to increased cardiovascular risk.
Tea or coffee? A case study on evidence for dietary advice 10th Apr '08 Health Research Archive The present paper explores the level of evidence required to justify giving dietary advice to the public.
The effects of l-theanine, caffeine and their combination on cognition and mood 10th Apr '08 Health Research Archive l-Theanine is an amino acid found naturally in tea.
Effectiveness of green tea on weight reduction in obese Thais: A randomized, controlled trial 10th Apr '08 Health Research Archive This study was undertaken to investigate the effects of green tea on weight reduction in obese Thais.
Habitual caffeine intake in women of childbearing age 10th Apr '08 Health Research Archive For women, delayed conception and recurrent pregnant loss are just a few of the health implications associated with a caffeine-rich diet (Mol. Hum. Reprod., 11, 357).
Maternal caffeine consumption during pregnancy and the risk of miscarriage: a prospective cohort study 10th Apr '08 Health Research Archive
Maternal caffeine consumption during pregnancy and the risk of miscarriage: a prospective cohort study 10th Apr '08 Health Research Archive he objective of the study was to examine whether the risk of miscarriage is associated with caffeine consumption during pregnancy after controlling for pregnancy-related symptoms.
Caffeine and miscarriage risk 10th Apr '08 Health Research Archive Coffee and caffeine have been inconsistently found to be associated with increased risk of clinical miscarriage-a potentially important association given the high prevalence of exposure.
The impact of caffeine on mood, cognitive function, performance and hydration: a review of benefits and risks 10th Apr '08 Health Research Archive The reputed benefits of moderate caffeine consumption include improvements in physical endurance, cognitive function, particularly alertness and vigilance, mood and perception of fatigue.
Women tea-drinkers have less plaque in their arteries 14th Mar '08 Heart Health Women who drink tea may be protecting themselves from building up plaque in their arteries, so reducing their risk for heart disease and stroke, according to the results of a study conducted in Paris.
Black tea could lower risk of Parkinson's disease 14th Mar '08 Health & Wellbeing Drinking black tea regularly could reduce the risk of developing Parkinson's disease, concluded a study.
TAP comments on latest diabetes findings and the link to tea 4th Mar '08 Diabetes In response to a research paper just published in the Journal of Aging Cell which reviews the possible link of black tea and its compounds towards the prevention of Diabetes, the Tea Advisory Panel (TAP) would like to make the following comment:
Bone mineral density, polyphenols and caffeine: a reassessment 20th Dec '07 Health Research Archive Several studies have shown beneficial associations between tea consumption and bone mineral density (BMD) and fracture risk.
Theaflavins attenuate hepatic lipid accumulation through activating AMPK in human HepG2 cells 20th Dec '07 Health Research Archive Black tea is one of the world's most popular beverages, and its health-promoting effects have been intensively investigated.
Inhibition of carcinogenesis by tea constituents 20th Dec '07 Health Research Archive The possible cancer preventive activity of tea has received much attention in recent years.
Tea Consumption Is Inversely Associated With Carotid Plaques in Women 20th Dec '07 Health Research Archive The aim of this study was to assess the relationship of tea consumption with common carotid artery intima-media thickness (CCA-IMT) and carotid plaques.
Metabolic and hormonal effects of caffeine: randomized, double-blind, placebo-controlled crossover trial 20th Dec '07 Health Research Archive In short-term studies, caffeine has been shown to increase insulin levels, reduce insulin sensitivity, and increase cortisol levels.
Tea and coffee drinking and ovarian cancer risk: results from the Netherlands Cohort Study and a meta-analysis 20th Dec '07 Health Research Archive In a cohort study, ovarian cancer (280 cases) showed no significant association with tea or coffee, the multivariable rate ratios being 0.94 (95% confidence interval (CI): 0.89, 1.00) and 1.04 (95% CI: 0.97, 1.12) per cup per day, respectively.
The efficacy of black tea in ameliorating endothelial function is equivalent to that of green tea 20th Dec '07 Health Research Archive Consumption of tea has been shown to improve endothelial function. It is assumed that catechins are the tea components responsible for these beneficial effects.
The effect of consuming instant black tea on postprandial plasma glucose and insulin concentrations in healthy humans 20th Dec '07 Health Research Archive To determine the effects of black tea on postprandial plasma glucose and insulin concentrations in healthy humans in response to an oral glucose load.
Time for tea: mood, blood pressure and cognitive performance effects of caffeine and theanine administered alone and together 20th Dec '07 Health Research Archive Although both contain behaviourally significant concentrations of caffeine, tea is commonly perceived to be a less stimulating drink than coffee.
Consumption of black, green and herbal tea and iron status in French adults 20th Dec '07 Health Research Archive A number of potential health effects have lately been accorded to tea consumption.
Tea and cancer prevention: molecular mechanisms and human relevance 20th Dec '07 Health Research Archive Tea made from the leaves of the plant Camellia sinensis is a popular beverage.
Interaction of Soy Food and Tea Consumption with CYP19A1 Genetic Polymorphisms in the Development of Endometrial Cancer 5th Oct '07 Health Research Archive Certain polyphenols inhibit the activity of aromatase, a critical enzyme in estrogen synthesis that is coded by the CYP19A1 gene.
Green tea and black tea consumption in relation to colorectal cancer risk: the Singapore Chinese Health Study 5th Oct '07 Health Research Archive The relationships between green tea and black tea consumption and colorectal cancer risk were examined within the Singapore Chinese Health Study, a prospective cohort study of diet and cancer involving over 60,000 men and women.
Tea beverage in chemoprevention and chemotherapy of prostate cancer 5th Oct '07 Health Research Archive Prostate cancer (PCa) is the most frequently diagnosed malignancy and the second leading cause of cancer-related deaths in American males with similar trends in many western countries.
Coffee and tea consumption and the risk of Parkinson's disease 5th Oct '07 Health Research Archive Several prospective studies have assessed the association between coffee consumption and Parkinson's disease (PD) risk, but the results are inconsistent.
Interactions among age, adiposity, bodyweight, lifestyle factors and sex steroid hormones in healthy Singaporean Chinese men 5th Oct '07 Health Research Archive To examine the inter-relationships among age, lifestyle factors, anthropometric parameters, percent body fat and steroid hormone parameters in 531 healthy Singaporean Chinese men aged between 29 and 72 years old.
Tea polyphenols for health promotion 5th Oct '07 Health Research Archive People have been consuming brewed tea from the leaves of the Camellia sinensis plant for almost 50 centuries.
Plant sterol-enriched milk tea decreases blood cholesterol concentrations in Chinese adults: a randomised controlled trial 5th Oct '07 Health Research Archive The cholesterol-lowering effects of plant sterols in a format suitable for use in China have not previously been investigated.
Physiological levels of tea catechins increase cellular lipid antioxidant activity of vitamin C and vitamin E in human intestinal Caco-2 cells 5th Oct '07 Health Research Archive Oxidative stress has been linked to the development of various chronic diseases. Vegetables and fruits, which contain polyphenols, were shown to have protective effects.
Intakes of coffee, tea, milk, soda and juice and renal cell cancer in a pooled analysis of 13 prospective studies 5th Oct '07 Health Research Archive Specific beverage intake may be associated with the risk of renal cell cancer through a diluting effect of carcinogens, alterations of hormone levels, or other changes in the renal tubular environment, but few prospective studies have examined these assoc
The effects of chronic tea intake on platelet activation and inflammation: a double-blind placebo controlled trial 5th Oct '07 Health Research Archive Tea drinking appears to protect against the development of coronary heart disease (CHD), but the mediating pathways are uncertain.
Caffeine, fluid-electrolyte balance, temperature regulation, and exercise-heat tolerance 5th Oct '07 Health Research Archive Dietitians, exercise physiologists, athletic trainers, and other sports medicine personnel commonly recommend that exercising adults and athletes refrain from caffeine use because it is a diuretic, and it may exacerbate dehydration and hyperthermia.
Caffeine and the kidney: what evidence right now? 5th Oct '07 Health Research Archive Caffeine, or 1, 3, 7-trimethylxanthine, is one of the most frequently consumed active drugs worldwide.
Acute EGCG Supplementation Reverses Endothelial Dysfunction in Patients with Coronary Artery Disease 22nd Jun '07 Health Research Archive Epidemiological studies demonstrate an inverse relation between dietary flavonoid intake and cardiovascular risk.
Black tea improves endothelial function in renal transplant recipients 22nd Jun '07 Health Research Archive Endothelial damage and dysfunction are commonplace in renal transplant recipients.
Effects of Infusion Time and Addition of Milk on Content and Absorption of Polyphenols from Black Tea 22nd Jun '07 Health Research Archive Epidemiological studies assessing the health benefits of drinking black tea are equivocal.
A prospective study of dietary flavonoid intake and incidence of epithelial ovarian cancer 22nd Jun '07 Health Research Archive Flavonoids are antioxidant compounds found in plants, including fruits, vegetables and tea.
Estimated dietary flavonoid intake and major food sources of U.S. adults 22nd Jun '07 Health Research Archive Estimating flavonoid intake is a first step toward documenting the protective effects of flavonoids against risk of chronic diseases.
Effect of cocoa and tea intake on blood pressure: a meta-analysis 22nd Jun '07 Health Research Archive Epidemiological evidence suggests blood pressure-lowering effects of cocoa and tea.
Maternal caffeine consumption and risk of cardiovascular malformations 22nd Jun '07 Health Research Archive The physiologic effects and common use of caffeine during pregnancy call for examination of maternal caffeine consumption and risk of birth defects.
Dietary Intakes of Flavonols and Flavones and Coronary Heart Disease in US Women 22nd Jun '07 Health Research Archive Dietary flavonols and flavones are subgroups of flavonoids that have been suggested to decrease the risk of coronary heart disease (CHD).
Coffee and tea consumption and risk of hepatocellular carcinoma in Italy 22nd Jun '07 Health Research Archive The role of coffee in the aetiology of hepatocellular carcinoma has raised great interest.
Urinary biomarkers of tea polyphenols and risk of colorectal cancer in the Shanghai Cohort Study 22nd Jun '07 Health Research Archive There have been no studies on specific tea polyphenol biomarkers and risk of colorectal cancer in humans.
Coffee, tea, and caffeine consumption and serum uric acid level: The third national health and nutrition examination survey 22nd Jun '07 Health Research Archive Coffee is one of the most widely consumed beverages in the world and may affect serum uric acid levels and risk of gout via various mechanisms.
Flavonoid Intake and Cognitive Decline over a 10-Year Period 22nd Jun '07 Health Research Archive In the PAQUID (Personnes Agaes Quid) study, the authors prospectively examined flavonoid intake in relation to cognitive function and decline among subjects aged 65 years or older.
Consumption of black tea or coffee and risk of ovarian cancer 13th Mar '07 Health Research Archive The goal of this study was to investigate the associations between ovarian cancer risk and usual consumption of black tea, regular coffee, or decaffeinated coffee.
Dietary polyphenolic phytochemicals--promising cancer chemopreventive agents in humans? A review of their clinical properties 13th Mar '07 Health Research Archive Epidemiological and preclinical evidence suggests that polyphenolic phytochemicals exemplified by epigallocatechin gallate from tea, curcumin from curry and soya isoflavones possess cancer chemopreventive properties.
Etiological study of esophageal squamous cell carcinoma in an endemic region: a population-based case control study in Huaian, China 13th Mar '07 Health Research Archive ontinuous exposure to various environmental carcinogens and genetic polymorphisms of xenobiotic-metabolizing enzymes (XME) are associated with many types of human cancers, including esophageal squamous cell carcinoma (ESCC).
Apigenin and cancer chemoprevention: progress, potential and promise (review) 13th Mar '07 Health Research Archive Cancer is one of the major public health burdens in the United States and in other developed countries, causing approximately 7 million deaths every year worldwide.
Food groups and renal cell carcinoma: a case-control study from Italy 13th Mar '07 Health Research Archive Although nutrition and diet have been related to renal cell carcinoma (RCC), the role of specific foods or nutrients on this cancer is still controversial.
Black tea--helpful or harmful? A review of the evidence 13th Mar '07 Health Research Archive To consider whether consumption of black tea has a positive or negative impact on health.
Dietary antioxidant intake and risk of an aneurysmal rupture subarachnoid hemorrhage in Japan 13th Mar '07 Health Research Archive The purpose of this study was to investigate the relationship between dietary antioxidant intake and the risk of subarachnoid hemorrhage (SAH) in a case-control study.
Black tea prevents cigarette smoke-induced apoptosis and lung damage 13th Mar '07 Health Research Archive Cigarette smoking is a major cause of lung damage. One prominent deleterious effect of cigarette smoke is oxidative stress.
Influence of habitual diet on antioxidant status: a study in a population of vegetarians and omnivores 13th Mar '07 Health Research Archive Antioxidant status can be used as a biomarker to assess chronic disease risk and diet can modulate antioxidant defence.
Consumption of black, green and herbal tea and iron status in French adults 13th Mar '07 Health Research Archive A number of potential health effects have lately been accorded to tea consumption.
Tea consumption and basal cell and squamous cell skin cancer: Results of a case-control study 13th Mar '07 Health Research Archive Tea constituents, including polyphenols, are hypothesized to have chemopreventive properties, and inhibit the induction of skin cancers in animal models.
Non-alcoholic beverage and caffeine consumption and mortality: The Leisure World Cohort Study 13th Mar '07 Health Research Archive To examine the effects of non-alcoholic beverage and caffeine consumption on all-cause mortality in older adults.
Addition of milk prevents vascular protective effects of tea 13th Mar '07 Health Research Archive Experimental and clinical studies indicate that tea exerts protection against cardiovascular diseases.
Interactions between smoking and other exposures associated with lung cancer risk in women: diet and physical activity 13th Mar '07 Health Research Archive The objective of the study is to estimate the differences in the impact of diet and physical exercise on lung cancer risk in female nonsmokers vs. smokers, and reveal interactions, if any.
Overview of antibacterial, antitoxin, antiviral, and antifungal activities of tea flavonoids and teas 13th Mar '07 Health Research Archive Tea leaves produce organic compounds that may be involved in the defense of the plants against invading pathogens including insects, bacteria, fungi, and viruses.
Effects of different steeping methods and storage on caffeine, catechins and gallic acid in bag tea infusions 13th Mar '07 Health Research Archive Bag teas, packed 3g of ground black, green, oolong, paochoung and pu-erh tea leaves (the particle size used was 1-2mm), were steeped in 150mL of 70, 85 or 100 degrees C hot water to study the effects of the number of steeping (the same bag tea was steeped
Molecular targets of tea polyphenols in the cardiovascular system 13th Mar '07 Health Research Archive Tea-derived polyphenols have attracted considerable attention in the prevention of cancer and cardiovascular diseases.
Evidence-based approach to lingering hydration questions 13th Mar '07 Health Research Archive Studies related to fundamental hydration issues have required clinicians to re-examine certain practices and concepts.
Flavonoid intake and cardiovascular disease mortality: a prospective study in postmenopausal women 13th Mar '07 Health Research Archive Dietary flavonoids may have beneficial cardiovascular effects in human populations, but epidemiologic study results have not been conclusive.

Latest news

Newsletter Signup

Welcome to the Tea Advisory Panel

This site has been set up by the Tea Advisory Panel to provide journalists and health professionals with the latest scientific research and nutritional information on tea. Please tick one of the boxes below to indicate whether you are a journalist or health professional.

Please select an option above.