The nails protect the nerve-rich fingertips and tip toes from injury. Nails are a substructure of the epidermis (the outer layer of the skin) and are composed mainly of keratin, a type of protein. The nail bed is the skin o which the nails grow. Nails grow from 0.05 to 1.2 millimeters (approximately 1/500 to 1/200 inch) a week. If a nail is lost, it takes about seven months to grow out fully.
Healthy nail beds are pink, indicating a rich blood supply.
Changes or abnormalities in the nails are often the result of
nutritional deficiencies or other underlying conditions. The
nails can reveal a great deal about the body's internal health.
* A lack of sufficient hydrochloric acid (HCI) contributes
to splitting nails.
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