One way that green tea can help you lose weight is simply by filling up your stomach when it’s empty. One Mellow Monk fan writes: “I found that between meals, drinking coffee actually made me hungrier. But when my tummy’s full of green tea, I feel more satisfied and less tempted to snack.” One reason may be that green tea is much less acidic than coffee. Drinking something acidic or that otherwise places a “burden” on the stomach (such as alcohol) may increase the appetite in a sort of defensive reaction to protect stomach. Green tea, however, is easy on the stomach and doesn’t trigger that reaction. Most folks also say that green tea is also a lot less likely to result in heartburn or an upset stomach.