A little sunshine is good for the soul. As a natural source of vitamin D, it’s also good for your health. But it’s likely not enough, which is where the best vitamin D supplement can help. “For many people, vitamin D supplementation is not only beneficial but essential,” explains registered dietician and wellness advisor for The Lanby , Taylor Fazio, MS, RD, SPN. “Vitamin D deficiency is one of the most common nutrient insufficiencies worldwide.” Studies suggest that almost 40% of adults suffer from insufficient vitamin D levels—with deficiency rates even higher in certain groups. “Limited sun exposure, darker skin tone, northern latitudes, and low dietary intake of vitamin D-rich foods like eggs, salmon, and mushrooms, can all contribute to insufficient vitamin D levels,” says nutri

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