Vitamin D, often known as the sunshine vitamin, plays an important role in your bone health. It is mostly made by the body through exposure to sunlight. This is unique to vitamin D since most vitamins come from the foods you eat. Having too much or too little vitamin D in your body can affect the amount of calcium in your bones and can take a toll on your overall bone health. Low levels of vitamin D can lead to decreased bone mass (osteoporosis) which can increase your risk of fractures. Too much vitamin D can lead to calcium deposits in the kidneys (kidney stones), or calcium build-up in other soft tissues like the heart, lungs, and blood vessels.

More than 90% of a person’s vitamin D requirement tends to come from casual exposure to sunlight. This poses some unique challenges for those whose environments limit their exposure to the sun. For example, in Canada and other countries in the northern hemisphere during the winter months, people are exposed to less ultraviolet light. Therefore, in Canada our bodies produce little to no vitamin D. Statistics Canada reported that, in the winter months, 40% of Canadians had vitamin D levels that were below the recommended range. In the summer, that number is smaller, but still a whopping 25%. As a northern country, we often lack the exposure to ultraviolet light that is needed for enough vitamin D to be made in the body year-round.

You can get vitamin D naturally from a few foods, including egg yolks or fatty fish such as salmon or mackerel. In Canada, some foods are fortified with vitamin D by law to prevent the risk of vitamin D deficiency in the general population, including milk, soy milk, rice beverages, and margarine.

*Reposted from the CCA

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