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.?


Why am I so itchy?

For about two months now my whole body had been itchy and will sometimes break out into a rash. I tried switching soaps and laundry detergent; I just don't know what it is. It's on my arms, legs, back, inner thighs, feet, etc. I'm scared and really want to find out what's wrong and stop itching.


What are golf nodules?

I've noticed what appears to be a wrist bone protruding on the back of my right hand. It's on the thumb side and closest to my forearm bones. I've been playing a lot of golf lately, and someone told me it was a "golf nodule." If so, what are golf nodules? Is this dangerous (it doesn't hurt right now), and do I need to do anything about it?


Is it normal if my boyfriend's semen is chunky?

1) I tried looking for an answer to my question in the archives, but didn't find one. What I want to know is if it is normal that my boyfriend's semen has clumps (I don't know how else to describe it) in it? The semen has never been clumpy before, but the last time I gave him a blowjob, the semen had a chunky consistency to it. Should I be worried that this may be an STD, or is this kind of thing related to other things, and if so, what are they? Thanks.

2) I just realized a few days ago that my sperm comes out in pieces. For example, they are as thick as small boiled rice pieces... is there a concern to worry?


Is there a connection between emotions and physical pain?

When I hear someone make a negative comment about me it sometimes sticks and for some reason my chest will begin to hurt. A friend of mine said it was emotional shock. For a while the feeling went away, but then it got worse. Now the pain will range from my heart to my left arm, depending on how badly (depressed) I feel. In general, I want to know if I should be concerned or if it's just as my friend says: "emotional shock," that's just gotten worse.