Originally posted by TheUnknown
(i have not have many dreams for about 4 years.. and i just found out why)
I doubt that.
The vividness of dreams are of course different from person to person, but all and everyone dreams during the night, if they get enough sleep.

People who think they are dreaming very rarely, propably don't remember their dreams.
So in this case, is it propably more helpful with better dream recall than increased serotonin in the brain.