In the summer, I'm a sucker for the beach and a lot of direct sun without sunscreen, so I seasonally
opt out of supplementing with vitamin d since I'm getting from it's natural source: the sun.
That may work for a community college or a student who is reliant on parents to
supplement their income so they can go to classes, however for someone who is working and going to school that person must
opt out for night classes and online classes which definitely increases the cost
of your classes.