Watermelon itself has diuretic effect. If you have edema, eating watermelon can relieve edema, but this is not fat consumption or weight loss.

At the same time, it should be noted that people often like to use half a watermelon instead of dinner in summer. In fact, the average calorie of different varieties of watermelon is about 30 kcal/100g, and half a watermelon has 3 or 4 kilograms, so the maximum calorie can reach 600 kcal. For dinner, this calorie is too high. The main source of calories is carbohydrates, which is not conducive to weight loss.

So for people with edema constitution, watermelon can play a certain role in eliminating edema, but it can't lose weight.