Poor nail health can indicate many conditions. Kidney disease, lung disease, diabetes, heart disease, and anemia can all cause a person to have poor nail health. See your doctor if you notice any changes in your nail health to check for an underlying medical condition.
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Honor Society of Nursing (STTI) answered
Mehmet Oz, MD, Cardiology (Cardiovascular Disease), answeredYour nails can be a clue to your overall health. Some common conditions that poor nail health may indicate include thyroid disorder, vitamin deficiency, iron-deficiency anemia, sinusitis, chronic bronchitis, and diabetes. If you are concerned about your nail health or notice any changes in your nails, talk to your doctor.