Weight Loss Green Tea benefit

The development of obesity is characterized by an increase in adipose tissue mass and by changes in almost all organ functions leading to diseases such as hypertension, diabetes mellitus and coronary heart disease. Would drinking green tea or taking a green tea supplement lead to weight loss and thus reduce the risk of chronic diseases?
   Human studies regarding the benefit of green tea for weight loss have shown inconsistent results. In one study mentioned here green tea, daily consumption of green tea for 3 months reduced body fat but another study did not show weight loss with the use of green tea extract supplements. Scientists are still evaluating whether a green tea pill by itself leads to weight loss. See below for more green tea and weight loss research information. If you plan to drink green tea for weight loss, avoid drinking after mid afternoon or early evening so that your sleep is not disturbed. It is quite likely that the combination of green tea extract and other supplements that influence appetite or metabolism could lead to weight loss.

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Green Tea Extract offers a convenient way to get the benefits of green tea in a highly concentrated green tea pill form.  This green tea extract is standardized for bioflavonoid-like antioxidants known as polyphenols, particularly Epigallocatechin Gallate EGCG. EGCG has been found in scientific studies to be a potent antioxidant. Green tea antioxidants are likely to become more popular with time.

Green Tea Supplement Facts
Green Tea Extract Yielding 35 mg epigallocatechin gallate EGCG

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Green Tea and Weight Loss - Green Tea Diet - Is Green Tea a fat burner?
Human studies regarding the benefit of green tea in weight loss have not shown consistent results. In one study mentioned below, daily consumption of green tea for 12 weeks reduced body fat. Green tea could enhance metabolism. Scientists are still evaluating whether a green tea pill by itself leads to weight loss. See below for more green tea and weight loss research information. If you plan to drink green tea for weight loss, avoid drinking after mid afternoon or early evening so that your sleep is not disturbed.

Effectiveness of green tea on weight reduction in obese Thais: A randomized, controlled trial.
Physiol Behav. 2007 Oct 18; Auvichayapat P, Prapochanung M, Tunkamnerdthai O, Sripanidkulchai BO, Auvichayapat N, Thinkhamrop B, Kunhasura S, Wongpratoom S, Sinawat S, Hongprapas P. Department of Physiology, Faculty of Medicine, Khon Kaen University, 40002, Thailand.
This study was undertaken to investigate the effects of green tea on weight reduction in obese Thais. A randomized, controlled trial involving 60 obese subjects (body mass index, BMI > 25kg/m(2)) was conducted. All subjects consumed a Thai diet containing 3 meals for 12weeks. The diet contained 65% carbohydrates, 15% protein, and 20% fat. In comparing the two groups, differences in weight loss were 2.70, 5.10, and 3.3kg during the 4th, 8th, and 12th weeks of the study, respectively. At the 8th and 12th weeks of the study, body weight loss was significantly different. We conclude that green tea can reduce body weight in obese Thai subjects by increasing energy expenditure and fat oxidation.

Anti-obesity effects of green tea: from bedside to bench.
Mol Nutr Food Res. 2006 Feb;50(2):176-87. DSM Nutritional Products, Department of Human Nutrition and Health, Basel, Switzerland.
Green tea, green tea catechins, and epigallocatechin gallate (EGCG) have been demonstrated in cell culture and animal models of obesity to reduce adipocyte differentiation and proliferation, lipogenesis, fat mass, body weight, fat absorption, plasma levels of triglycerides, free fatty acids, cholesterol, glucose, insulin and leptin, as well as to increase beta-oxidation and thermogenesis. Adipose tissue, liver, intestine, and skeletal muscle are target organs of green tea, mediating its anti-obesity effects. Studies conducted with human subjects report reduced body weight and body fat, as well as increased fat oxidation and thermogenesis and thereby confirm findings in cell culture systems and animal models of obesity. There is still a need for well-designed and controlled clinical studies to validate the existing and encouraging human studies.

Ingestion of a tea rich in catechins leads to a reduction in body fat and malondialdehyde-modified LDL in men.
American Journal of Clinical Nutrition, Vol. 81, No. 1, 122-129, January 2005
Catechins, the major component of green tea extract, have various physiologic effects. There are few studies, however, on the effects of catechins on body fat reduction in humans. We investigated the effect of catechins from green tea on body fat reduction and the relation between oxidized LDL and body fat variables. Design: After a 2-wk diet run-in period, healthy Japanese men were divided into 2 groups with similar BMI and waist circumference distributions. A 12-wk double-blind study was performed in which the subjects ingested 1 bottle oolong tea /d containing 690 mg catechins (green tea extract group; n = 17) or 1 bottle oolong tea /d containing 22 mg catechins (control group; n = 18). Results: Body weight, BMI, waist circumference, body fat mass, and subcutaneous fat area were significantly lower in the green tea extract group than in the control group. Conclusion: Daily consumption of green tea containing 690 mg catechins for 12 wk reduced body fat, which suggests that the ingestion of catechins from green tea might be useful in the prevention and improvement of lifestyle-related diseases, mainly obesity.

Effect of long-term oral administration of green tea extract on weight gain and glucose tolerance in Zucker diabetic (ZDF) rats.
J Herb Pharmacother. 2005;5(3):55-65. Botanical Center in Vivo Care, 700 West State St, West Lafayette, IN, 47907, USA.
There have been some claims that green tea reduces weight and lowers blood glucose in diabetes. Intraperitoneal injections of green tea catechins in diabetic rats have shown beneficial effects. To determine if oral administration of green tea would prevent development of diabetes, young Zucker diabetic rats were dosed with green tea extract containing 50-125 mg/kg of Epigallocatechin gallate (EGCG) starting at 7 weeks of age, before the appearance of excessive weight gain and glucose elevation. While there was a trend toward lower weight gain and average daily glucose, there was no statistically significant difference.