Well I read that Marijuana might cause cell growth in your brain cuz they tested it on rats and the rats brain cells grew but now there trying to see if the same happends to humans!

The link!

Marijuana might cause new cell growth in the brain - health - 13 October 2005 - New Scientist
littlegcs93 Reviewed by littlegcs93 on . Cannabis and changes in brain chemistry Does smoking weed cause permanent or relatively long lasting effects on brain chemistry? If one is "addicted", is the change "enhanced"? I've had insomnia for about 4 years... and the frequency of cannabis I consumed in the beginning of this might be seen as linked to this. I might also have an "addictive" personality, or something. I tried not smoking for as long as... well half a year probably, the longest since then. Do I just need to stay off of it for longer? Maybe the cannabis is not Rating: 5