This is touched on in the article, but these mushrooms would have vitamin D2. Studies find that supplementation with vitamin D3 is more effective(lower dose for

This is touched on in the article, but these mushrooms would have vitamin D2. Studies find that supplementation with vitamin D3 is more effective(lower dose for the same effect) and longer lasting on blood vitamin D levels than vitamin D2. So frequently eating enough of the mushrooms would be important if facing a vitamin D deficiency.