1. In most cases, yellow nails indicate a fungal infection. If not treated in time, this condition may worsen and your nails may even acquire a greenish tint and become crumbly. Other possible causes of the yellow color include aging, lung issues caused by smoking, and frequent usage of low-quality acrylic nails.
2. White nails with a strip of pink at the top (or Terry’s nails) can be a sign of congestive heart failure, kidney failure, diabetes, and some liver problems such as hepatitis or cirrhosis. Sometimes Terry’s nails may also be caused by aging.
3. If your nails are extremely pale, you probably have a nutritional deficiency or a circulation problem that prevents the blood from reaching your fingertips. In severe cases, this may even lead to anemia or an iron deficiency in your blood.
4. Dark red nails may indicate that you have heart disease. If the redness extends to the sides of your nails and cuticle, this might be a sign of an autoimmune disease called lupus.
5. Bluish or purple nails usually mean that your body doesn’t get enough oxygen. Among other possible causes are heart issues and lung problems such as emphysema and chronic bronchitis.
6. Other colors of your nails may be a sign of various health problems. For example, if your nails turn brown, this may indicate that you have a thyroid disease or nutritional problems. Grey tinted nails are usually caused by taking some prescription drugs like antimalarial pills.
