Given that green tea can boost the metabolic rate in the short term, it makes sense that it could help you lose weight.
Several studies show that green tea leads to body fat decreases, especially in the abdominal area.
One of these studies was a 12-week randomized controlled trial in 240 men and women. In this study, the green tea group had significant decreases in body fat percentage, body weight, waist circumference and belly fat.
On the other hand, some studies don’t show a statistically significant increases in weight loss with green tea, so this needs to be taken with a grain of salt.