"While it is found in a few foods like oily fish, most people get vitamin D from a natural effect on the body caused by sunlight. Low levels are associated with bone conditions such as rickets and osteoporosis, but it can also affect muscle tissue and has been found to be associated with normal levels of dopamine, a chemical linked to mood, in the brain."
Vitamin D deficiency associated with heightened depression, study finds
SCIENCE (from the Latin for 'knowledge') informs wisdom, reason and humanism. This is a 4-legged worldview within reality that maximizes well-being for individuals and society.