What is the bad effect of smoking weed?

Answer 1

It makes you forget things that were said or done. Your mind sorta slows down a bit but not drastically.

While smoking it, you sometimes don't think things are happening when they really are or vis versa.

Whether people like to admit it or not, it makes you a little stupid.
The weed deprives the particular crops most of the nutrients thereby leading to a decrease in the yields.