Regarding the THC topic I think both @Houdini and @Plutus are right to different extents.
From my personal experience, I used to get severe migraines since I was a young child once every 4-6 months. These headaches completely stopped once I started smoking weed. In that way, it can be beneficial to smoke at least a little bit - ideally, after you’ve turned 25.
That’s because THC 100% without a doubt can cause psychosis, memory loss and there are also studies that suggest that it boosts estrogen and inhibits testosterone. THC is not a miraculous healing medicine, that’s a load of shit peddled by stoners snorting copium. It has slight benefits outnumbered by a whole ton of problems, and we haven’t even discussed the very real possibility of addiction.
No shadow of a doubt that smoking weed will dumb you down with regards to a deductive thought approach, but weed will also improve your ability to use inductive reasoning IMO. My personal recommendation to all men is not to touch that shit with a 10 foot pole until you turn 25 and your brain’s finished growing.