Guide to Vitamins

Should I Take Vitamin D?

30 to 50% of Americans are low in vitamin D. Are supplements the answer? It’s complicated.

Illustrations by Kieran Blakey

“I do think there’s emerging evidence that vitamin D supplementation may reduce the risk of cancer-related death.”

I write about health, science, and psychology. My work has appeared in Time magazine, the New York Times, Vice, and elsewhere. I live in Germany.