Some receptors in human brain are ones for vitamin D and these receptors are found in areas of the brain that are linked to the development of depression.
So far, scientists don't fully understand how vitamin D affects depression. One idea is that vitamin D affects serotonin levels and how serotonin works in the brain. And many depression drugs work by raising serotonin levels. This is why researchers suggest that vitamin D may help tackle depression.
However, it's worth noting that studies haven't shown whether low vitamin D levels is a cause of depression. Further research is needed to find out. And you should bear in mind that it's unwise to take vitamin D supplements in place of anti-depressant medicines or other treatment options.
Keyword: vitamins depression