The nail is made of keratin and grows an average of 3.5 mm per month. The nail is normally pinkish in color because of the rich microvascular system in the nail bed underneath. The nail is a window to health and the condition of the nail can overwhelmingly reflect the health of the body. If there are white spots on the nails and white spots on the face and frequent stomach pains, it may be caused by roundworms in the body. If it is accompanied by a bloated stomach and acid reflux, it may be caused by poor digestion. If abnormal nail growth is found and white spots appear on the surface in the form of dots or lines, it may be caused by zinc deficiency. If there is hypersensitivity, irritability, habitual constipation, and roundworms in the body, and white spots or mica-like nails, it may be caused by a deficiency of trace elements such as calcium and silicon. White spots on the nails can also be caused by trauma to the nails or due to nail allergies, or fungal infections, such as gray nails, in addition to respiratory disease, heart disease, kidney disease, liver disease and other nails will also appear white spots. The white spots on the nails must not be ignored, daily attention to nail maintenance, not often manicure, in addition should also eat more calcium, iron, zinc and other foods rich in calcium, iron, etc., in the nails with white spots at the same time, the body with other symptoms, should promptly seek medical attention.