11 Essential Bone Health Facts About Calcium and Vitamin D You Should Know

5. Fortified foods versus natural sources: why many people still need supplements

Natural vitamin D sources are limited: fatty fish, egg yolks, and sunlight are the main ones. Much of the vitamin D in many people’s diets comes from fortified foods such as milk, plant milks, certain cereals, and orange juice. Fortification policies vary by country, so relying on fortified foods alone can leave gaps. For example, a typical diet without fortified milk may only supply small amounts of vitamin D from food. That’s why public health guidelines often recommend supplements for groups at risk of low exposure. When you shop, read labels for “vitamin D added” and check the amount per serving. Fortified dairy or plant milk also boosts calcium intake. If you travel between regions, or if your household uses non-fortified traditional ingredients, consider whether a low-dose daily supplement could provide reliable coverage, especially during winter months or if you spend most of your time indoors.