Does marijuana produce serotonin?

My girlfriend tells me she uses marijuana to calm herself if she is having a stressful day. She has been doing this for many years. She says smoking pot is like self-medicating — it is better than using anti-depressants. She also claims smoking pot helps with depression because of how it helps produce serotonin in the body. What is serotonin and how does it help depression? Does smoking pot really help with managing your anxiety, depression, etc.?


What should I do if my girlfriend's afraid to have sex?

My girlfriend and I have been going out for more than two years now. I am a first-year student (18 years old) and she is 17. We haven't had sex yet, but during the last year and a half we tried pretty much everything there is besides it. I really feel this is the right time, but when I try to talk to her about it, all she says is that she is afraid. She says it is not that she does not believe in losing virginity before marriage, she is just afraid. I don't want to pressure her, but I just feel that maybe I am not the right person for her or something. What should I do? Thanks.


Are other drinks besides water still hydrating?

I frequently hear that beverages with caffeine or alcohol are not good for replenishing fluids and preventing dehydration. But in reality aren't they just a bit less effective at hydrating your body than other beverages? In other words, if you were stuck in the desert with nothing to drink but beer, coffee and cola, would you actually be worse off and die of thirst sooner if you drank these beverages versus not drinking anything at all?


How long should I wait to use Viagra after using poppers?

I know that it is extremely dangerous to mix viagra (or other ED drugs) and poppers (amyl nitrate), and that one should wait for 24 hours after using viagra (to let it get out of your system) before using poppers. My question is what is the waiting period after using poppers before it is safe to use viagra? In other words, how long before the physiological effects of poppers wear off?