Observe Your Nails to Detect Health Issues: If You Notice These 3 Signs, Seek Medical Care Immediately

Your nails can reveal far more about your health than you might expect. Dermatologists note that changes in color, shape, or texture may signal underlying conditions that require medical attention. Here are the three key areas to watch closely.

1. Check the Color

According to Dr. Zainab Laftah, dermatology consultant at HCA Healthcare UK, unusual nail colors such as white, yellow, blue, or black may point to serious health issues.

Pale or White Nails

Very pale nails may indicate:

• Iron deficiency (anemia)

• Heart problems

• Kidney disease

Brittle nails that break easily can also be linked to low iron levels. If so, eating iron-rich foods—like meat, figs, dates, and molasses—may help restore healthy levels.

White nails with streaks or spots may signal:

• Allergies

• Trauma

• Fungal infections

• Diabetes

• Heart failure

• Cirrhosis

• Poisoning

Yellow Nails

Persistent yellowing may be a warning sign of:

• Thyroid disorders

• Lung disease

• Chronic fungal infections

Blue Nails

Blue or bluish-purple nails suggest low oxygen levels in the blood. If anemia is not the cause, this may indicate:

• Heart disease

• Lung disease (like COPD or pneumonia)

Cold weather can temporarily turn nails bluish, but if the color stays blue even in warmth, it may be a sign of cyanosis, which requires urgent evaluation.