Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Men do not cause yeast infections in women

19.12.2003


Researchers find oral sex, masturbating linked to recurrent infections



Women may blame their husbands or boyfriends for headaches, tears and stress. But they can’t be blamed for those nasty recurrent yeast infections, contrary to popular belief.

A new study by University of Michigan Health System researchers finds that the presence of yeast in male sex partners do not make women more prone to recurrent yeast infections. Certain sexual activities, however, were linked to increased risk of recurrent yeast infections in women, according to the study.


"Many physicians, and many women, believe that women get recurrent yeast infections because their partner passes the yeast back to them during intercourse. This study refutes that belief," says study author Barbara Reed, M.D., M.S.P.H., professor of Family Medicine at the U-M Medical School. "This study suggests the risk for recurrent infections is related to something else – perhaps the woman’s immune response to the yeast."

Candida vulvovaginitis, or yeast infection, is one of the most common diagnoses in American women. About three-quarters of women will have at least one yeast infection in their lives, and 40 percent have recurrent infections. The Candida yeast are often found in both women and men in the genital area, rectum and mouth.

In the study, published in the December Journal of Women’s Health, researchers looked at 148 women with confirmed Candida vulvovaginitis and 78 of their male sexual partners. Each woman was examined by a doctor, who collected samples from the vagina, cervix, vulva, tongue and rectum. The men were asked to collect at home urine, fecal and semen samples and a tongue swabbing. The samples were analyzed by culture to determine whether Candida species were present at each site.

The women received treatment for their initial infection and were asked to return for follow-up visits after two weeks, four weeks, six months and a year. At each visit, they were asked about symptoms, sexual activity and changes in risk factors. Doctors repeated the pelvic exam and specimen collections.

The women were also told to return for testing any time they had symptoms of vaginal discharge, itching or odor. Doctors performed an exam and collected specimens at these visits as well. After the symptomatic visits, the men were also asked for new specimen collections. Thirty-three of the women developed at least one recurrent yeast infection within the year.

At the two-week and one-month visits, none of the women had symptoms of a yeast infection. But 20 percent had a positive culture for Candida in the vaginal area at the two-week visit and 29 percent tested positive for Candida after one month. The researchers found these women were no more likely to develop recurrent infections by the end of the one-year study period.

Among the men, nearly half tested positive for Candida species on the tongue and in the feces, while few showed Candida in their urine or semen. Researchers found no link between Candida in the men’s specimens and Candida at the women’s vulva, rectum or tongue. They also found no link between recurrent yeast infections and signs of Candida at any site in either the men or women.

When sexual activities were looked at, however, the researchers found women who had recurrences were more likely to have participated in cunnilingus (or oral sex given to the woman) or masturbation of the woman with saliva in the past month. Only 14.5 percent of women reported masturbation with saliva, however, while 69 percent reported cunnilingus, suggesting oral sex is the more common risk.

Oral sex and masturbation with saliva proved to be risk factors whether men showed signs of yeast in their mouth or not. The risk was also not affected by the presence of Candida in the women’s genital area.

"We’re not saying that oral sex is a problem for everyone, but if a women is experiencing recurrent yeast infections, those activities put her at an increased risk," Reed says.

The woman’s age at first intercourse, lifetime number of partners, frequency of intercourse or anal intercourse in the previous month were all not associated with recurrences.

The researchers suggest that Candida exists in some women in balance with the other organisms and immune components in the vaginal area, and that washing that area with saliva may disrupt the balance, leading to symptoms of yeast infection.


###
The study received funding from the National Institute of Allergy and Infectious Diseases. In addition to Reed, study authors include Philip Zazove, M.D., and Daniel W. Gorenflo, Ph.D., from the U-M Department of Family Medicine; Carl L. Pierson, Ph.D., from the U-M Department of Pathology; and Julie Horrocks, Ph.D., from the Department of Mathematics and Statistics at the University of Guelph in Ontario, Canada.


Nicole Fawcett | EurekAlert!
Further information:
http://www2.med.umich.edu/prmc/media/relarch.cfm

More articles from Health and Medicine:

nachricht Speed data for the brain’s navigation system
06.12.2016 | Deutsches Zentrum für Neurodegenerative Erkrankungen e.V. (DZNE)

nachricht Study suggests possible new target for treating and preventing Alzheimer's
02.12.2016 | Oregon Health & Science University

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Significantly more productivity in USP lasers

In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.

Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

Im Focus: MADMAX: Max Planck Institute for Physics takes up axion research

The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.

The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

Simple processing technique could cut cost of organic PV and wearable electronics

06.12.2016 | Materials Sciences

3-D printed kidney phantoms aid nuclear medicine dosing calibration

06.12.2016 | Medical Engineering

Robot on demand: Mobile machining of aircraft components with high precision

06.12.2016 | Power and Electrical Engineering

VideoLinks
B2B-VideoLinks
More VideoLinks >>>