Do you bite your nails? Do you paint them?
No matter how you upkeep your fingernails, they can offer a window to many health issues.
Yellow nails could mean fungal infections, which is the most common nail problem or disorder seen. Other things your doctor could check for are thyroid disease, lung disease, diabetes or psoriasis says the same website.
Cracking or splitting nails that are yellowish in color can also sometimes be due to fungal infections.
If you are not getting enough oxygen, your nails could take on a blue tint.
Dark lines or black discoloration of the nail could come from slamming your thumb in the door or from melanoma, so you should always have this checked by a doctor.
CNN's Susan Hendricks reported that good hygiene can prevent infections. You can do that by keeping your nails clean and dry to help prevent them from splitting or cracking.
(Reminder: Information included in this story is to promote discussion and health awareness. Please consult your doctor for advice on your health issues and questions.)
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