Vitamin D isn't in high enough sources in foods. Not unless you're eating a ~cup of them a day or in the days you aren't taking the supplement. This is importan

Vitamin D isn't in high enough sources in foods. Not unless you're eating a ~cup of them a day or in the days you aren't taking the supplement. This is important because the study went into differences between "occasional" and "regular" vitamin D supplement users. Mushrooms are very good for many other reasons and should be a staple in most weekly diets.