Moreover, when the entire nail is white it could mean kidney or liver disorders or anemia. White lines across the nail may also indicate liver disease. A half white nail with dark spots on the tip could indicate a kidney disorder. Abnormally thick nails might be due to the blood not circulating properly in the vascular system. Yellow nails can mean there are problems with your liver, diabetes, respiratory disorders or problems with the lymphatic system.
Yellow nails can occur many years before the disorder shows up.
Sometimes the nail could even be spoon shaped. You could have impaired kidneys or problems with circulation. Nails that are very bendable could be a sign of rheumatoid arthritis. Pitted brown spots or split fingernail tips may mean you have psoriasis. Very deep blue nail beds can indicate pulmonary obstruction or emphysema.