Mushrooms when exposed to ultraviolet light can then have considerable amounts of dietary Vitamin D https://en.wikipedia.org/wiki/Edible_mushroom#Vitamin_D htt

Mushrooms when exposed to ultraviolet light can then have considerable amounts of dietary Vitamin D https://en.wikipedia.org/wiki/Edible_mushroom#Vitamin_D https://en.wikipedia.org/wiki/Edible_mushroom#Vitamin_D Otherwise there really isn't much in the diet that naturally or regularly contains it other than milk that has been supplemented.