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Expert insights on vitamin D, UV exposure, and sun safety

A person sprays sunscreen lotion onto their palm before applying it, the everyday ritual at the heart of the sunscreen and vitamin D debate.

Sunscreen and Vitamin D: How to Get Enough Without Burning

Does daily sunscreen cause vitamin D deficiency? A look at the actual evidence, why real-world wearers rarely become deficient, and a practical framework.

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A person sits on a sandy beach in the warm sun, the kind of everyday exposure many assume is enough to keep vitamin D levels in range.

Why You Can Be Vitamin D Deficient Despite Plenty of Sun

A practical explainer on why people in sunny climates still test low for vitamin D, the eight factors most often to blame, and what to fix first.

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