Vitamin D for Runners > TL;DR > - Many runners are deficient; test levels (target 40-60 ng/mL) > - Sun exposure, fatty fish, fortified foods; supplement if low > - Important for bone health, immunity, performance > - Dose depends on baseline; don't megadose without testing --- Why Vitamin D Matters Vitamin D is essential for: - Calcium absorption and bone health - Muscle function - Immune function - Possibly mood and mental health - May reduce injury risk Many ...

Vitamin D for Runners > TL;DR > - Many runners are deficient; test levels (target 40-60 ng/mL) > - Sun exposure, fatty fish, fortified foods; supplement if low > - Important for bone health, immunity, performance > - Dose depends on baseline; don't megadose without testing --- Why Vitamin D Matters Vitamin D is essential for: - Calcium absorption and bone health - Muscle function - Immune function - Possibly mood and mental health - May reduce injury risk Many ...