Normal people who eat too much lemon may cause tooth sensitivity; at the same time, it may aggravate stomach pain in patients with gastric diseases, aggravate acid reflux in patients with gastroesophageal reflux and other symptoms. 1. Tooth sensitivity: the acidic substances in lemons will form a stimulus to the teeth, overconsumption or long-term consumption may cause toothache, toothache, and acidic substances will corrode the teeth, which in the long term is likely to cause tooth sensitivity. 2. aggravate gastric disease patients with stomach pain: lemon contains a lot of citric acid, citric acid into the stomach and intestines after the gastric mucosa will produce greater irritation, patients with gastric disease may appear stomach pain. 3. aggravate gastroesophageal reflux patients acid reflux: citric acid after entering the stomach and intestines, will stimulate the secretion of gastric acid, for itself suffers from gastroesophageal reflux patients, excessive secretion of gastric acid not only aggravate the disease, but also may appear acid reflux. Lemon in the acid is very rich, it is recommended to strictly control the amount of food, do not eat too much at once, if it is soaked in water to drink, it is best not to drink too thick, so as not to cause harm to the body.