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White lines on the fingernails can mean a variety of things. The most common is caused by trauma to the nail (hitting it on things), but it can also be due to a zinc deficiency. If it is caused by lack of zinc eat plenty of red meat, poultry, and nuts.

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14y ago
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12y ago

You either bruised your finger or your zync levels are low

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14y ago

Some think its heart trouble.

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14y ago

cuz it is

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Q: Black lines on finger nails
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