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Nail Changes and Nutrition: What Do We Know Now? Podiatry Today Our nails can reveal more than you might expect. Changes in color, texture, or thickness may signal diabetes, nutrient deficiencies, or other health concerns. These signs are easy to overlook, but do brown fingernails indicate glutathione deficiency Nail color changes as signs of underlying disease 6 Signs of Vitamin Deficiency Nail Disorders Due to Environmental, Professional, and Cosmetic Causes and Auto induced Nail Diseases Springer Nature Link
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