absorbable), older adults, people with digestive disorders (Crohn’s,
ulcerative colitis), and pregnant or breastfeeding women.
Food sources:
Oysters (the single best source)
Red meat and poultry
Crab and lobster
Beans and lentils
Nuts and seeds (cashews, pumpkin seeds)
Dairy (cheese, milk)
Plant-based note: Zinc from plant sources is less bioavailable due to phytates. Soaking, sprouting, or fermenting beans and grains reduces phytate content and improves zinc absorption.
Vitamin D and Calcium (The Duo)
Vitamin D helps your body absorb calcium. Calcium is essential for nail hardness and structure.
What the science says: Vitamin D deficiency has been linked
to brittle






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