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You can improve your calcium. If you have short thick white line on your fingernails, then you have a lack of calcium. You can drink more milk or if you are lactose intolerant you can take calcium tablets. Or think back to see if you can remember hitting your finger on something may have caused this line it will go away eventually if this is the case but if it does not you may want to go get a blood test to check if you lack a certain mineral or vitamin.

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13y ago
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Q: How can you Thicken your fingernails?
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