Many years ago I worked for a "Megacorp" and our team was in the basement of one of the buildings on their corporate campus. We joked about working with the mushrooms.
One day, some other engineers from a Norwegian company came to visit, looked around at our spaces and were astounded. They said that this would be illegal in Norway - they said workplaces in Norway were required to have windows!
Check out the documentary "Forks Over Knives" for great information about the health benefits of a vegan (whole food plant based) diet. The title makes reference to how much better it is to prevent (and even treat) many chronic health conditions with the fork rather than the surgeons knife.