My bias tells me that it's probably better to eat a healthy varied diet; get exercise; expose yourself to a bit of direct sunlight (10 minutes per day) but not too much; have good sleep hygiene; have good work habits; and so on.
These steps build resiliance against mild mental health problems and increase physical health.
I don't have any evidence and I especially don't want to be judgemental about it.
What if you take vitamins & minerals?