Is sunscreen the new margarine? (2021)

# Summary A controversial group of researchers, led by dermatologist Richard Weller, challenges the conventional wisdom that sun exposure is primarily harmful and should be avoided through sunscreen use. They argue that low vitamin D levels are merely a marker of sun exposure rather than the cause of health benefits, and that sunlight itself—through production of nitric oxide and other biological processes—is responsible for protecting against diseases like cancer, heart disease, and stroke, making current sun-avoidance guidelines potentially counterproductive and possibly discriminatory.