What Deficiency Causes Blue Nails? A Look at Cyanosis and Nutritional Links
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5 min read
Approximately 3 million people in the United States have anemia, and while not all cases result in nail discoloration, a specific nutrient deficiency can be a rare cause of blue nails. More commonly, the bluish tint, known as cyanosis, signals a lack of oxygen in the blood, pointing to underlying heart, lung, or circulatory issues that require immediate medical attention.
