Vagina sucking is good or bad for health?

It's a bad idea if the partner has a venereal disease or other infectious disorder of the female genitals (herpes II, aids, syphilis, etc). On the other side of the coin, if the female is "clean", she may not be after her "treatment". The human mouth is not exactly a sanitary environment, and can introduce pathogens to the female genito-urinary system.


Except for the foregoing reservations, cunnilingus is harmless.