What are the nails missing white spots?

Nail white spots lack trace elements. First, it may be caused by insufficient blood supply to nails caused by iron deficiency. Iron is an important component of hemoglobin. Second, it may be caused by calcium deficiency, which is one of the nutrients necessary for nail growth. In addition, it may be caused by zinc deficiency, which is also one of the essential trace elements for human body. In addition, it may be caused by silicon deficiency.