Fingernails are important part of body

The hand is one of the most amazing parts of the human body. We can use our thumbs and fingers to grab and manipulate objects.
But what about fingernails? Although modern humans may take them for granted, fingernails are important for our day-to-day actions. They help us dig, open things and even scratch an itch. Fingernails are made from a tough protein called keratin. (Primates aren’t the only animals that have found a use for keratin; hooves, horns and claws are also made from this substance.)
white spots in fingernails are not caused by not having enough calcium. Instead, they are the result of your hurting the nail. Throughout the day, your fingernails get banged and squeezed in various ways. (Most of the time, you will not notice when this occurs.)

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