I remember this article about Vitamin D says nobody is certain whether it actually does anything: https://www.nytimes.com/2022/07/27/health/vitamin-d-bone-frac

I remember this article about Vitamin D says nobody is certain whether it actually does anything: https://www.nytimes.com/2022/07/27/health/vitamin-d-bone-fractures.html https://www.nytimes.com/2022/07/27/health/vitamin-d-bone-fra...