Distilled water can be dangerous to health, and drinking a lot of it is a bad idea, gastroenterologist Alexandra Yakovleva says. According to the specialist, frequent consumption of distilled water, which does not contain mineral salts, disturbs the acid-alkaline balance in the body. Other possible consequences include an imbalance of substances, osteoporosis, and a lack of vitamins and minerals in the body. "Such water can flush salts, minerals, calcium, phosphorus, potassium, iron and copper out of the body. Because of this, kidneys, tooth enamel, heart muscle tissue, and bone tissue can suffer," said the gastroenterologist.