Green apples should not be eaten on an empty stomach.
If you are already used to waking up with a glass of water and then an apple, it is recommended that you should change this habit. Eating apples on an empty stomach will not actually bring more benefits, on the contrary, the citric and malic acid contained in apples will cause some irritation to the stomach.
Our stomach is an acidic environment, and once the mucous membrane is damaged, the gastric juice will corrode to the stomach leading to gastric ulcers, gastric perforation and other problems, and will even cause gastric cancer. And green apples, oranges, grapes, peaches, pears and other fruits contain a lot of organic acids (such as malic acid, citric acid, tartaric acid, etc.), they will stimulate the mucous membrane of the stomach wall triggering acid reflux indigestion and other problems.
Expanded:
The green apple core contains a small amount of harmful substances - hydrocyanic acid. Hydrocyanic acid deposited in the body in large quantities can lead to symptoms such as dizziness and headache with increased respiratory rate, and in severe cases, coma may occur. But there is no need to worry too much, the hydrocyanic acid in the apple mainly exists in the core, the flesh is not. Eating apples used to gnaw on the core, although it will not immediately lead to poisoning, but long-term eating this way, it is not good for health.
The green apple contains ellagic acid, and seafood with food not only reduces the nutritional value of seafood protein, but also prone to abdominal pain, nausea and vomiting. The same goes for other fruits such as strawberries, prunes, persimmons, pomegranates, lemons, grapes, sour grapefruit, etc., which should not be eaten with seafood.
Reference:
1, the water quality problem, the water contains chlorine ions after disinfection, and the chlorine ions will cause damage to the fish