![Liquid gel capsules in a wooden spoon](https://nutritionfacts.org/app/uploads/2023/03/61-26-vitamin-d-supplements-tested-for-copd-heart-disease-depression-obesity-and-cancer-survival-120x90.jpg)
Vitamin D Supplements Tested for COPD, Heart Disease, Depression, Obesity, and Cancer Survival
Before watching the video, can you guess which conditions vitamin D has actually been proven to work for in randomized, double-blind, placebo-controlled trials?