image:thinkstockThis is Why Vaginosis Risk Increases During Sex Without Condoms - Condoms not only serve to prevent the transmission of pathogens or disease-causing germs. Contraceptives, as well as protection, is also working to maintain the balance of good bacteria in the female sex organs.
A study at the Melbourne Sexual Health Center in Australia revealed another function of the condom. Scientists say the risk of bacterial vaginosis infection increased in unprotected sex because of the balance of microbes in the sex organs disrupted.
In women who had unprotected sex, the population of two bacterial strains of Gardnerella vaginalis and Lactobacillus iners was found to be higher than normal. Both are the types of bacteria associated with bacterial vaginosis.
But according to scientists, the risk of microbial imbalance in female sex organs only occurs when having sex with a new partner. In a long-term relationship, there is a process of adaptation that can prevent infection due to microbial exchange during sex.
"There are about 100 million bacteria per milliliter of vaginal fluid, and 10 million bacteria per milliliter of ejaculate fluid (from male reproductive organs)," said Larry Forney of the University of Idaho, quoted by Newscientist.
Of the various types of bacteria in female sex organs, Lactobacillus is the dominant one. Type L. crispatus touted the most important role to maintain the pH or acidity levels, thus preventing the occurrence of pathogenic bacterial infection.