If you only eat pitaya for three days and don't eat other foods, it's not good for your health.
In fact, many foods have the function of losing weight, and it is better to lose weight with nutrition.
The foods with good weight-loss effect include coix seed, corn, buckwheat, sweet potato, potato, konjac, celery, wax gourd, radish, tomato, bean sprouts, tofu, kelp, apple, grapefruit, kiwi fruit and various fungi.