Does smoking weed ruin your brain?
No. Otherwise it wouldn't be a treatment for things like brain
cancer, Memory disabilities and seizures.
The us government has a patent on marijuana as a "brain
The rumor that marijuana damages the brain came from a study
done on monkeys in the mid 70's in which they put gas masks on 3
monkeys and proceeded to fill each mask with large amounts of
The masks were left on the monkeys until all of the smoke was
gone. The scientists found that the monkeys had lost brain cells.
However, what the scientists back then didn't realize is that it
was the lack of oxygen caused by the monkeys inhaling only smoke
with no breathing breaks for so long that killed their brain