You may not know that D’s importance goes beyond bone health, with studies showing that sufficient levels of D may help with cancer prevention and heart health. New research suggests that sufficient D may also boost cardio-respiratory fitness, aka “exercise capacity”—a measure of the heart and lungs to supply muscles with oxygen during exercise. Good cardio-respiratory fitness doesn’t just help you run 10Ks or play tennis; it’s linked to better health and a longer life. The study showed that for every incremental increase in vitamin D, there was a corresponding incremental increase in exercise capacity. More research is needed to determine the ideal level of vitamin D for fitness, but diet-wise, you can find D in fatty fish such as wild salmon and fortified yogurt or milk. If your levels are low, as measured by a simple blood test, talk with your doctor about taking a vitamin D2 or D3 supplement.
Source: Association between serum vitamin D levels and cardiorespiratory fitness in the adult population of the USA
"Vitamin D may play an anti-cancer role by slowing cell division. Sunshine is the natural source of vitamin D."
- Dr. Steve Blake, Vitamins and Minerals Demystified