A small trial conducted at Boston University has shown that a preparation of dried mushrooms that were exposed to ultraviolet light may contain as much vitamin D as a vitamin D supplement. When mushrooms are exposed to ultraviolet light, they produce vitamin D2, similarly to how humans produce vitamin D3 in the skin. This is good news for people who want to get vitamin D from non-animal based foods.
PositiveTip: Consuming mushrooms regularly can significantly contribute to vitamin D levels–as long as the mushrooms have been exposed to ultraviolet light.