Black tea lowers cardiovascular risk

The effect of black tea on risk factors of cardiovascular disease in a normal population


ANDI Centre of Excellence for Biomedical and Biomaterials Research, CBBR Building, MSIRI, University of Mauritius, Réduit, Republic of Mauritius.



A prospective randomized controlled clinical trial determined the effect of Mauritian black tea consumption on fasting blood plasma levels of glucose, lipid profiles and antioxidant status in a normal population.


The study group (71%) consumed 3 x 200ml of black tea infusate/day for 12weeks without additives followed by a 3week wash-out. The control group (29%) consumed equivalent volume of hot water for same intervention period.


The tea used had high levels of gallic acid derivatives (50±0.4mg/L), flavan-3-ols (42±2mg/L), flavonols (32±1mg/L) and theaflavins (90±1mg/L). Daily 9g supplementation of black tea infusate induced, in a normal population, a highly significant decrease of fasting serum glucose (18.4%; p<0.001) and triglyceride levels (35.8%; p<0.01), a significant decrease in LDL/HDL plasma cholesterol ratio (16.6%; p<0.05) and a non significant increase in HDL plasma cholesterol levels (20.3%), while a highly significant rise in plasma antioxidant propensity (FRAP: 418%; p<0.001) was noted .


Black tea consumed within a normal diet contributes to a decrease of independent cardiovascular risk factors and improves the overall antioxidant status in humans.

On a side note, that’s the first time I’ve seen any research coming out of Mauritius.


Leave a Comment:

Steve Parker, M.D. says May 30, 2012

Surprising effect on lowering blood sugar and triglycerides. Wonder what would happen to pathologically elevated levels.


Dan says May 31, 2012

Maybe a stupid question, but was is Mauritius black tea? Is it a special kind of black tea? Will any kind of black tea work, like Lipton or what not? I googled Mauritius black tea and did not get a good answer.
Thanks, Dan

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