Do Mushrooms/Shrooms actually have a positive effect on your brain?

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Psychedelic's are a different conversation , But I've seen claims such as other types of mushrooms such as Lions Mane or Cordyceps can bring SSRI type benefits towards the user.
I've seen various reports supporting this theory but If it was true I'd imagine It'd be more mainstream, So may i ask, Is this a cope or is it all real? Sorry for bad english im a pajeet