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.1
This study investigated the links between black tea consumption, flavonoid intake and prostate cancer risk in the Netherlands Cohort study. A total of 58,279 men were included. From 1986 to 2003, 3,362 prostate cancers were identified, including 1,164 advanced (stage III/IV) cancers.
Commenting on the study, Dr Tim Bond from the Tea Advisory Panel (TAP) notes: “Intake of black tea and various dietary flavonoids including total catechin, epicatechin, kaempferol, and myricetin were associated with a decreased risk of stage III/IV or stage IV prostate cancer. This latest study suggests that flavonoids in black tea may also contribute to lowering the risk of advanced prostate cancer. Black tea is the number one source of flavonoids - powerful bioactive compounds. Studies have shown that flavonoids have antioxidant and anti-inflammatory properties and reduce the proliferation or growth of body cells.2,3
“As a result, black tea flavonoids are thought to be the compounds responsible for the protective effects of black tea on our health. And studies show that the flavonoids work their magic whether or not we choose to add milk.”
"Looking further at this study, data showed that men 5 or more cups each day had a 33 per cent reduced risk of stage IV prostate cancer and a 25 per cent reduced risk of stage II/IV prostate cancer versus those men drinking one or fewer cups of black tea each day.
"In another study published earlier this year, tea consumption was associated with a 37 per cent reduced overall prostate cancer risk for men drinking two or more cups of tea each day compared those men drinking one or less cups of tea each week.4
Dr Bond adds: “This study is great news for men who enjoy drinking black tea. Evidence shows that black tea is associated with heart health benefits and now, potentially with benefits for the health of the prostate gland.
“As a result, British people should continue to enjoy their traditional life long habit of drinking tea as potential health benefits continue to emerge and drinking four or more cups a day delivers a host of health and wellbeing benefits.”
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1 Geybels MS, Verhage BA, Arts IC et al. Dietary flavonoid intake, black tea consumption, and risk of overall and advanced stage prostate cancer. Am J Epidemiol. 2013; 177(12):1388-98
2 Ruxton CHS (2009) The health effects of black tea flavonoids. Nutrition and Food Science 39: 283–94.
3 Mulvihill EE & Huff MW (2010) Antiatherogenic properties of flavonoids: implications for cardiovascular health. Canadian Journal of Cardiology 26 (Suppl. A): 17A–21A.
4 Geybels MS, Neuhouser ML, Stanford JL. Associations of tea and coffee consumption with prostate cancer risk. Cancer Causes Control. 2013; 24:941-8.
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