Vitamin D helps the body absorb calcium and supports normal bone and muscle function. Even in a sunny country, exposure varies with time outdoors, clothing, skin tone and season.
Food, sunlight and individual needs
Some foods provide vitamin D, including fatty fish, egg yolks and fortified foods. A varied diet and sensible outdoor habits are a useful starting point, but needs differ from person to person.
Choosing a supplement
Read the amount per serving and avoid combining several products without checking their totals. A healthcare professional can advise whether testing or supplementation is appropriate for you, especially if you are pregnant, have a health condition or take medication.