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Often referred to as windows into your health, fingernails can provide valuable clues about whats happening inside the body. Nails are living structures influenced by blood flow, nutrition, oxygen Brown nails as clues for shock diagnosis Inaba 2025 Journal of General and Family Medicine Wiley Online Library How Vitamin B12 Deficiency Affects Nails Core Med Science Dermatological Conundrum: Puzzling Pigmentation in Vitamin B12 Deficiency and Addison's Disease Nail Disorders Due to Environmental, Professional, and Cosmetic Causes and Auto induced Nail Diseases Springer Nature Link
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