No. The only thing semen can give you is a illness if he has one. Surgery is the only thing that helps.
Semen
Blood and semen. Seamen's blood, preferably.
"NO"
First, you mean, "Pre semen". (Semen is the whitish fluid that the sperm swim around in). Pre-semen is a slippery lubricant, and also changes the chemistry of the woman's birth canal so that it will not kill the sperm.
Yes no harm in digesting semen. Studies link a possible reduction in breast cancer in swallowing semen on a regular basis. As long as the man doesn't have a STD.
Yes, you can swallow semen. People have done that for years. Just make sure the other person is not infected with anything. Still, even orally, a condom is safer. Just use a plain condom for that which has no lubricant nor spermicide.
HIV is transmitted through blood, semen, breast milk, & other body fluids.
Blood to blood contact, unprotected sex, mother to child, breast milk, and semen.
Yes. Studies have proven a direct relationship over time. However the time was slowly progressive and if the woman is frequent (f= 16/week) there was an associated increase in breast size by 0.3 mm accordingly. Drinking semen can actually increase your breast size.
I'd say yes. It's not really a precum but the lubricant that helps the semen slide without friction during ejaculation. Some people call it precum but it contains no semen at all... only lube. =)
HIV is contacted by contact with infected blood, semen, vaginal fluid or breast milk.