Nutrient deficiency one-minute self-test 1, calcium deficiency: sleep sweating, occipital baldness; night often suddenly wake up, crying more than; late teething, fontanel closure delay. 2, iron deficiency: iron deficiency is anemia, the baby will appear inactive, poor spirit, poor appetite, pale, inattentive, slow reaction, easy diarrhea and other symptoms. 3, zinc deficiency: loss of appetite, slow growth, low immunity, frequent colds and fevers, repeated respiratory infections, map tongue, hyperactivity, slow reaction. 4.Lack of vitamin C: bleeding gums, bleeding in other parts of the body, easy to catch a cold, poor wound healing. Easily irritable and slow weight gain. Pale face, poor appetite. Dry hair, easy to break. 5, lack of vitamin B2: keratitis, whitening and erosion at the corners of the mouth, dry and cracked lips, red tongue and enlarged tongue papillae, eye corneal congestion and photophobia, inflammation in the skin folds such as scrotal inflammation, perineal inflammation, serious growth retardation. 6, lack of vitamin A: dry, flaky, rough skin, trachea, bronchial tubes susceptible to infection. Dark adaptation ability decreases, and in severe cases become night blindness.