Biotin (Vitamin B7) assists in fatty acid, amino acid, and glucose metabolism. Mild deficiency can lead to brittle nails, thinning hair, and dermatitis, issues older adults may face if diets are suboptimal.
Supplements are popular for improving hair thickness or nail strength, though clinical evidence is mixed. While biotin is not a direct anti-aging agent, ensuring adequate levels can support overall tissue maintenance in aging populations.
