Hello, there may be deviations between the physical status of each examination and different hospital laboratories. If the doctor has told you that you don't need to worry but you still have no confidence, I suggest you change to another hospital and measure again. If the results of the exam are still normal but you still have symptoms, you can supplement the iron with a diet. However, excessive exposure may cause iron poisoning, which may directly corrode the gastrointestinal mucosa, resulting in symptoms such as vomiting, diarrhea, melena, abdominal pain and gastroenteritis. Excessive amount can also easily affect the absorption of zinc, magnesium and other trace elements in the small intestine, and reduce the immune function of the body.