Nails that are very pale or white can indicate anaemia, liver disease, or malnutrition. It suggests a lack of red blood cells or a low haemoglobin count.
Yellow nails are often associated with fungal infections, but they can also indicate more serious conditions such as thyroid, diabetes or respiratory issues like chronic bronchitis.
Nails that appear blue or purple may indicate low oxygen levels in the blood, often due to respiratory or cardiovascular conditions like COPD or heart disease.
Brittle, dry, or cracked nails can be a sign of thyroid disorders, particularly hypothyroidism. It may also be related to a deficiency in biotin, a B vitamin.
Nails that curve upward at the edges, resembling a spoon, can indicate iron deficiency anaemia, hemochromatosis (excess iron absorption), or heart disease.
Small depressions or pits in the nails can be a sign of psoriasis, a skin condition that also affects the nails. It may also be associated with alopecia areata, an autoimmune disorder that causes hair loss.
Deep horizontal lines across nails may indicate a previous illness, injury, or severe stress that temporarily halted nail growth. Conditions like diabetes, zinc deficiency, or peripheral vascular disease could also cause these lines.
Note: While nail changes can sometimes signal health issues, they are not always definitive indicators. It's always best to consult with a healthcare professional for a proper diagnosis.