There was an article here just three days ago suggesting that vitamin D could very well be not a supplement to, but rather a marker of, good health. https://new

There was an article here just three days ago suggesting that vitamin D could very well be not a supplement to, but rather a marker of, good health. https://news.ycombinator.com/item?id=23086211 https://news.ycombinator.com/item?id=23086211