Nutritionists Advise Vitamin D Supplementation to Counter Autumn UV Deficit

By Violet Hayward · Vogue Beauty · 2026-09-28

Vogue Beauty reports that roughly 35% of U.S. residents maintain vitamin D levels below the optimal range. Experts suggest starting a D3 regimen in September or October to mitigate the effects of reduced sunlight during the colder months, particularly as natural synthesis through

Vogue Beauty reports that roughly 35% of U.S. residents maintain vitamin D levels below the optimal range. Experts suggest starting a D3 regimen in September or October to mitigate the effects of reduced sunlight during the colder months, particularly as natural synthesis through