Green Tea Extract Lowers Female Cholesterol

Green tea extract is the active ingredient extracted from green tea leaves, mainly including tea polyphenols (catechins), caffeine, aromatic oils, moisture, minerals, pigments, carbohydrates, proteins, amino acids, vitamins, etc. Tea polyphenols in green tea extracts have antioxidant effects.

Researchers from the University of Minnesota, the University of Pittsburgh, and the University of Southern California have published a study published in "American Clinical Nutrition" that green tea extract can significantly reduce cholesterol levels in women.

Green tea is a cheap and easily available natural drink, which is popular with consumers because of its efficacy in reducing cardiovascular disease risk and cardiovascular disease mortality. Increasing evidence shows that the efficacy of green tea in improving cardiovascular health is mainly due to EGCG (epigallocatechin gallate).

The study found that green tea generally contains 30% -40% of water-soluble polyphenols, and black tea (green tea obtained after fermentation) contains 3% -10%. Oolong tea is a semi-fermented tea, somewhere between green tea and black tea. The four basic polyphenols in green tea are EGCG, gallate catechin (EGC), epicatechin gallate (ECG) and epicatechin (EC).

In this study, the product used by the researchers Corban Laboratories / Eniva Nutraceutics Corban Complex green tea composite extract, which contains 1315 mg of catechins, 843 mg of EGCG, 202 mg of EG, 107 mg of EGC and 107 mg EC. The product is in the form of capsules, one capsule a day.

In another randomized, double-blind placebo-controlled trial, the researchers evaluated the link between green tea extract and breast cancer. The researchers enrolled a total of 1075 healthy women and randomly divided them into two groups, one group taking placebo and one group taking green tea extract supplements for a 12-month trial. The green tea extract in this study was provided by Taiyo Green Power Co., Wuxi, China.

The results of the study showed that among the 936 female volunteers who completed the sub-test, green tea extract reduced the total cholesterol level of the experimental group volunteers by 2.1%, LDL cholesterol level by 4.1%, and the control group by 0.7% And 0.9%. Surprisingly, the level of triglycerides in the volunteers of the experimental group increased by 3.6%, while that of the control group decreased by 2.5%.

The researchers said that EGCG is the most-received ingredient among all green tea active ingredients, because among all the biologically active ingredients of green tea, EGCG is the most abundant and the effect of reducing blood fat is the strongest. The part is unknown. Researchers speculate that perhaps green tea extract can inhibit the production of cholesterol, reduce the absorption of lipids, and increase the body's excretion of cholesterol.