Eljasz Pomorski
Eljasz Pomorski voted up PJ Stein's answer

I have never had one, but I had a friend who used to get them occasionally. She worked long hours, and didn't always eat properly. She would sometimes get run down and would go see her doctor and he would give her a B-12 shot.

Eljasz Pomorski
Eljasz Pomorski voted up Adonia Dennis' answer


STDs are caused by bacteria and viruses including chlamydia, gonorrhea, trichomoniasis and syphilis.
Your chances of getting them are highest if:

  •   You have unprotected sex with your partner.
  •   Your sexual partner has an STI.
  •   Your partner is engaging in sex with other people.

Practice safe sex and not have sex with someone who has a  sexually transmitted … Read more