Whether it is boys or girls, eating too much pineapple may lead to oral pain, skin allergies, stomach upset and so on. 1. Oral pain: pineapple contains a lot of phytic acid, if too much to eat, it will cause some stimulation of the oral cavity as well as the mucous membrane of the tongue, thus causing pain in the mouth, and may even lead to mouth ulcers. 2. Skin allergies: pineapple contains a large number of glycosides, if too much to eat, will cause some stimulation of the skin, resulting in itching, redness and swelling of the skin and other allergic reactions. 3. Stomach discomfort: pineapple acidity is relatively strong, if you eat too much, it will lead to increased secretion of gastric acid, causing some stimulation of the gastric mucosa, which leads to stomach acidity, bloating and other symptoms of discomfort. It is recommended to avoid eating a lot of pineapple, before eating pineapple can also be soaked in lightly salted water, can reduce the irritation.