The Effects of Green Tea on Obesity and Type 2 Diabetes
Obesity and type 2 diabetes are major public health issues worldwide, contributing to increased cardiovascular morbidity and mortality. The proportions of people with obesity and/or type 2 diabetes have increased and recently reaching epidemic levels in Asia . Although pharmacologic modality is the mainstay treatment of diabetes, remedies using plants (e.g., garlic, psyllium, and green tea) have stimulated a new interest in research . Green tea (Camellia sinensis) is one of the world's most popular beverages, especially in Asian countries including Korea, China, and Japan. Because of the high rate of green tea consumption in these populations, even small effects on an individual basis could have a large public health impact . A population-based, prospective cohort study has shown that green tea consumption is associated with reduced mortality due to all causes and cardiovascular disease as well , and randomized controlled trials have indicated that green tea is effective in decreasing blood pressure, low density lipoprotein cholesterol, oxidative stress, and a marker of chronic inflammation .
Various studies have shown the beneficial effects of green tea, not only on cardiovascular diseases but also on obesity and type 2 diabetes itself [6,7]. In a retrospective cohort study performed in Japan, a 33% risk reduction of developing type 2 diabetes was found in subjects consuming six or more cups of green tea daily compared to those consuming less than 1 cup per week . Wu et al.  reported that Taiwanese subjects who had habitually consumed tea for more than Continue reading