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Most if not nearly all people with depression problems only need sunshine or vitamin D3 supplements. I have seen it work with my daughter and three other people. Clinical depression is a result of insufficient vitamin D. In Việt Nam Depression or worse, manic depression is not uncommon among city women who cover up totally when they go out in the tropic sun because they have heard all their lives that they must not let the sun touch their skin or they can never get a husband. Once married it is steel hard habit. I convinced a young woman who was headed for suicide to go out every day in short sleeves midmorning and midafternoon. 20 years later she is married with two children, stable and happy, and dresses in western fashions-short skirt and short sleeves, and she is an evangelist to other women to show some skin daily.
There likely needs to be some more restraint. My guess is, as with so many drugs pertaining to all aspects of health: doses are too high and taken for too long.
But to suggest psychedelics and marijuana instead is shameful.