To say marijuana can be used everyday without ill effects is just foolish. I'm not here to say smoke or not, I'm strongly in belief of legalization and regulation but proper drug education first and foremost. Ill effects? Paranoia, anxiety, short term memory loss etc are all ill effects, temporary or otherwise. Putting smoke in your lungs is never good but can be mitigated by eating or vaporizing. Recent studies suggest smoking under 18 leaves lasting mental deficits. http://www.sciencedaily.com/releases/2012/08/120827152039.htm

I'm not here to argue for against marijuana or drugs, and make a debate on positive vs negative effects, but if you choose to use them, use them responsibly and don't fool people into thinking it's perfect. Education is key, and I laugh at the thought of rogaine having more ill effects than cocaine.