We know that bacterial vaginosis is linked to an imbalance in the bacteria that are normally found in a female's vagina - an imbalance in the vagina's naturally occurring bacterial flora. However, nobody fully understands why this imbalance occurs. The vagina usually contains mostly good bacteria and few harmful bacteria - bacterial vaginosis occurs when these harmful bacteria grow in numbers. We do not know what role these harmful bacteria play in causing BV.
A female's vagina should contain lactic acid bacteria, called lactobacilli. These bacteria produce lactic acid, making the vagina slightly acidic, preventing other bacteria from growing there. If the vagina is not as acidic as it should be, other bacteria may have the opportunity to grow. If there are fewer lactobacilli the vagina may become less acidic.
Any female can develop BV. Some behaviors or activities may upset the balance of the naturally occurring bacterial flora and increase the risk of developing BV, including:
Douching - using water or a medicated solution to clean the vagina
Having a bath with antiseptic liquids
Having a new sex partner
Having multiple sex partners
Perfumed bubble baths and some scented soaps
Smoking
Using an IUD (intrauterine device), such as a contraceptive device made from plastic and copper that fits inside the uterus
Using vaginal deodorants
Washing underwear with strong detergents
However:
Women who have never had sexual intercourse may be affected
You cannot get BV from toilet seats, bedding, swimming pools, or touching objects
Written by Christian Nordqvist
Medical News Today
