Study finds they increase levels of friendly bacteria and prevent minor infections
It’s
not just the gut that benefits from friendly bacteria, a person’s
more intimate regions do too - and condoms have been found to boost
levels in women’s vaginas.
A
study has revealed that sexually active women who used condoms have
greater quantities of beneficial bacteria called Lactobacillus
compared to other forms of contraception.
Possessing
healthy levels of the bacteria in that part of the body is associated
with a lower incidence of itchiness and even a lower chance of being
infected with HIV.
The
scientists focused on lactobacillus, a group of bacteria that
dominates the natural flora of the vagina for many women.
The
microbes, which produce lactic acid and hydrogen peroxide, help the
vagina maintain an average pH of 4.5, similarto the acidity of beer
or tomato juice.
This
'acidic buffer system', as the researchers called it, is thought to
block harmful bacteria from taking up residence and causing
infections.
Though
there may not be a 'normal' microbiome for a healthy vagina, the
presence of lactobacillus is thought to help prevent bacterial
vaginosis, which is an imbalance of vaginal bacteria that causes
itching, unusual discharge and unpleasant smell.
Beneficial
bacteria have even been linked to a decreased risk of HIV infection.
The
researchers found that the population of lactobacillus was
significantly higher in the condom group.
Sexual
activity can disrupt the balance of the vagina's ecosystem,
especially when semen (which has a pH of 7.0 to 8.0) enters the mix,
the researchers said.
The
results suggest that condoms can help the vagina maintain its natural
acidic defenses, the researchers said.
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