It is true that Vitamin D plays a major role in regulation of various systems, and can help to stabilize mood. I take tons of the stuff myself.
That doesn't mean you should barf a "Vit D good" information packet on every story about depression, though. Without taking the time to add context, it looks rude and dismissive.
That doesn't mean you should barf a "Vit D good" information packet on every story about depression, though. Without taking the time to add context, it looks rude and dismissive.