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The sunshine vitamin may protect against a host of diseases, including osteoporosis, heart disease, and cancers of the breast, prostate, and colon. What's more, sunlight has other hidden benefits—like protecting against depression, insomnia, and an overactive immune system.
Given all the upsides of basking at least briefly in the summer sun, many experts now worry that public-health messages warning about skin cancer have gone overboard in getting people to cover up and seek the shade. U . S . News got in touch with Robyn Lucas, an epidemiologist at Australian National University who led a study published in the February issue of the International Journal of Epidemi o logy . Her finding: Far more lives are lost to diseases caused by a lack of sunlight than to those caused by too much.
A single nutrient that keeps bones strong, wards off cancer, and protects against tuberculosis, diabetes, colds, and the flu. Sound too good to be true? There's more: It's free. But you're almost certainly not getting enough.