There is no effect, although there are no side effects. In fact, never eat high-calorie foods, such as fried foods and snacks with high fat and sugar. Don't miss dinner, especially breakfast, and drink plenty of water every day. Eat more fresh vegetables and fruits. I've lost 8J in 40 days now, which is quite good. I read the diet books in Zhou Xinlei's diary. I control my diet, such as eating meat at noon, eating beef yesterday at noon, trying not to put too much salt, eating boiled eggs in the morning, adding cucumber yogurt to coarse grains at night and so on. And I will lose weight by perseverance. You can eat protein food such as boiled eggs and low-fat pure milk for breakfast. The calories are not complete, but the nutrition is quite comprehensive. You can eat coarse grains and green leafy vegetables at night. Just keep the rice for lunch, and choose meat for lunch.