The symptoms of calcium, zinc and iron deficiency are different. Calcium deficiency manifests as deformation of bones, etc.; zinc deficiency manifests as poor resistance, etc.; iron deficiency manifests as pallor, etc., which are analyzed as follows: 1. Symptoms of calcium deficiency: common symptoms of calcium deficiency include excessive sweating, body aches, cramps, and easy agitation. Depending on the age, the symptoms may vary. Usually, children with calcium deficiency show excessive sweating, easy to be excited is more common, when the patient is less than two years old, easy to have ring-shaped occipital baldness, and when older, easy to have leg pain at night. Calcium deficiency in middle-aged and elderly people is more likely to have cramps in the legs and feet, especially when cold or overworked, it is more likely to have cramps, the elderly may also have pain in the bones of the body, height reduction and other changes. 2. Symptoms of zinc deficiency: Zinc deficiency usually manifests itself in backward growth and development, anorexia, skin lesions, hair loss, etc. After supplementing with sufficient amount of zinc, the abnormalities will usually disappear slowly. 3. Symptoms of iron deficiency: Iron deficiency manifests itself in easy fatigue, often feel depressed during the day, and may also cause thinning of the nails, pallor and other symptoms, but also some patients will also appear after exercise muscle pain. Excessive iron deficiency in the human body can also lead to iron deficiency anemia, body fatigue, weakness, easy to wake up, dizziness, serious cases of hair loss, if women with iron deficiency anemia may have an impact on menstruation, resulting in irregular menstruation, bleeding and other symptoms. Calcium deficiency, zinc deficiency and iron deficiency need to consult a doctor in a timely manner and follow the doctor’s instructions for scientific treatment.