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New Study: Males May Need Treatment to Resolve Partner’s Bacterial Vaginosis

By Chris D. Meletis, N.D.

Males May Need Treatment to Resolve Partner’s Bacterial Vaginosis If you have bacterial vaginosis (BV), chances are good your doctor will prescribe antibiotics and/or recommend a good probiotic. But a new study shows that it’s not only women who should be treated for a BV infection—your partner may also need treatment.

What Is Bacterial Vaginosis?

Bacterial vaginosis is the most common vaginal condition in women ages 15 to 44.1 This common bacterial vaginal infection is linked to an increased risk of contracting sexually transmitted diseases such as HIV.2 BV also is associated with an increased risk of preterm delivery, preterm labor, and miscarriages later in pregnancy.3

Bacterial vaginosis treatment usually involves a course of antibiotics. However, half of all women with this infection develop recurrent BV.4 In these women, BV returns six to 12 months after they were given antibiotics for BV.4 Many women also use probiotics as a natural remedy for BV. The microorganisms—both friend and foe—living in the vagina are known as the microbiota. When the vaginal microbiota becomes imbalanced the bad bacteria gets an upper hand on the friendly organisms that normally reside there. This can lead to BV in women.

New Study Suggests Bacteria on Penis May Lead to BV in Women

A new study published in Frontiers in Cellular and Infection Microbiology suggests that the bacteria that cause BV in women may originate in male sex partners.4 The study found that the composition of bacteria of a man’s penis predicted whether his female sex partner developed BV.

For the study, researchers evaluated 168 couples including men aged 18 to 35 and their female sex partners aged 16 and older. The scientists determined whether the women had BV at the study’s start as well as at one and six months and after a year. The study authors also analyzed the type of bacteria on the men’s penises. Of the women who did not have BV at the study’s start, 31.6% (52) of the females contracted the infection. Comparing the type of bacteria on each man’s penis led to the discovery that male sex partners of women who developed BV had similar bacteria. Specifically, there were 10 types of bacteria found on the men’s penis that were linked to the development of a BV infection in the women.

The male bacteria that is transferred to the woman through sex could trigger a BV infection soon after exposure. Or, the bacteria from the penis may disrupt the woman’s vaginal microbiota over time. Repeated exposure could result in BV.

The study authors suggest giving men either antibiotics or probiotics as bacterial vaginosis medication to alter the microbiome of the penis. This could reduce BV risk in the men’s sex partners. A number of studies show probiotics may be beneficial in women with BV.5,6 Now, this new study shows giving probiotics to men may be equally important.

About Dr. Meletis

Dr. Chris Meletis Dr. Meletis is an internationally recognized naturopathic physician, an accomplished author, and respected educator in the field of natural medicine. Dr. Meletis was honored as a ‘Naturopathic Physician of the Year’ by the American Association of Naturopathic Physicians for his commitment to education and helping those in need. His mission is simply, “changing the world’s health, one person at a time”.

He has authored 14 books on subjects ranging from natural medicine interactions to fertility enhancement and has published over 80 articles in publications such as Natural Health andNatural Pharmacy. Dr. Meletis has served as the Dean of Naturopathic Medicine and Chief Medical Officer for the National College of Naturopathic Medicine (NCNM) for seven years and later as the school’s Senior Science Officer. He sits on several medical advisory boards and has worked with Oregon Health and Science University on a grant from the National Institute of Health to further educate MD graduates on natural medicine.

References:

  1. Centers for Disease Control. Bacterial Vaginosis – CDC Fact Sheet. https://www.cdc.gov/std/bv/stdfact-bacterial-vaginosis.htm. Accessed August 10, 2020.
  2. Atashili J, Poole C, Ndumbe PM, Adimora AA, Smith JS. Bacterial vaginosis and HIV acquisition: a meta-analysis of published studies. Aids. 2008;22(12):1493-1501.
  3. Leitich H, Kiss H. Asymptomatic bacterial vaginosis and intermediate flora as risk factors for adverse pregnancy outcome. Best Pract Res Clin Obstet Gynaecol. 2007;21(3):375-390.
  4. Mehta SD, Zhao D, Green SJ, et al. The Microbiome Composition of a Man’s Penis Predicts Incident Bacterial Vaginosis in His Female Sex Partner With High Accuracy. Front Cell Infect Microbiol. August 4, 2020;10.
  5. Mur Pérez AM, Mateo Segura Z, Ramírez Domínguez N, Vela Condón P. [Use of probiotics in bacterial vaginosis]. Semergen. 2017;43(5):394-398.
  6. Ling Z, Liu X, Chen W, et al. The restoration of the vaginal microbiota after treatment for bacterial vaginosis with metronidazole or probiotics. Microb Ecol. 2013;65(3):773-780.
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