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This is because our bodies actually produce it autonomously when our skin is exposed to the sun's UVB rays.īut sun alone isn't an adequate source of vitamin D for everyone. It may also play a role in our mood and immune health, while some studies suggest it could reduce the risk of major diseases like heart disease and Type 2 diabetes.Īnd you've likely heard it called the " sunshine vitamin," too. Vitamin D is an essential nutrient that's believed to support strong bones and help reduce the risk of fractures as we age. When you buy through our links, Insider may earn an affiliate commission.
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