1 Weight loss
"Green tea increases the metabolism. The polyphenol found in green tea works to intensify levels of fat oxidation and the rate at which your body turns food into calories," Kolkata-based fitness expert Souman Bose told us. Several studies (including research at Penn State's College of Agricultural Sciences) show that green tea leads to decreases in body fat, especially in the abdominal area. One of these studies was a randomized controlled trial in 240 men and women that went on for 12 weeks. In this study, the green tea group had significant decreases in body fat percentage, body weight, waist circumference and abdominal fat. However, some studies don’t show statistically significant increases in weight loss with green tea, so this needs to be taken with a grain of salt. Bottom Line: Some studies show that green tea leads to increased weight loss. It is particularly effective at reducing the dangerous abdominal fat.