It's not clear how or why exactly vitamin D has such a strong effect on mood. Scientists do know however that the human brain is full of special vitamin D receptors, so it's obviously an important nutrient for brain and mental health. The Institute of Medicine has recently raised its recommendations for vitamin D to 600 IUs for people under 70 and 800 for people over.
According to Dr. E. Sherwood Brown, a top researcher in the Texas study:
“[These findings] add depression to the spectrum of medical illnesses associated with low vitamin D, and people with depression probably should consider a blood test to see if their vitamin D is low and whether supplements may be needed."But he warns that vitamin D may not be a "cure" for depression. It certainly can't hurt to make sure your "D" levels are high enough!
Learn some mo': Low Levels of Vitamin D May Be Linked to Depression
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