Vitamin D is the most-consumed supplement on the market, taken for everything from bone health to the prevention of cancer and diabetes. However, an eight-year clinical trial of over 25,000 Americans known as the Vitamin D and Omega-3 Trial provided less than impressive evidence for many of these claims. The trial divided subjects into a placebo group and a group that received daily vitamin D supplementation. While the vitamin D group did not have lower overall risk of heart attack, stroke or cancer, the members of this group who did get cancer were less likely to die from it. This suggests that more research is needed to fully understand vitamin D’s health effects.
- Studies show that lower levels of Vitamin D can put patients at risk for cancer, heart disease, and diabetes.
- Taking vitamin D did not impact whether or not a person is more prone to a heart attack or stroke.
- Certain diseases and medicines can interfere with Vitamin D metabolism.
“Some experts started advising that all people load up on D: In 2011, the Endocrine Society even published guidelines recommending supplementation. And today consumers take more D than any other supplement, according to a 2018 survey from ConsumerLab.com.”