Lemon has a weight loss effect and the weight loss effect will vary from person to person. Firstly, lemon contains a large amount of vitamin C. Vitamin C is a fat-soluble vitamin that can dissolve excess fats in the body and excrete them through metabolism. Secondly, lemon contains acidic substances that can help the body digestion, promote intestinal peristalsis, reduce flatulence, indigestion caused by the body’s calorie hoarding, lemon contains a large number of essential amino acids and nutrients, which have a positive effect on promoting metabolism and reduce some of the body’s calories. As lemon contains a lot of acidic substances that can easily cause an increase in stomach acid in the body, thus causing an increase in the desire for food, which has a negative effect on weight loss, the consumption of lemon needs to be moderate.