Here’s some studies about vitamin D and vaginal health:

Effect of Vitamin D on the Vaginal Health of Menopausal Women: A Systematic Review (2019)

Conclusion: A meta-analysis of 6 different studies (391 participants total) testing the effectiveness of vitamin D for vaginal health in menopausal women found that, out of the doses tested, the higher doses were effective for improving vaginal epithelial cells, decreasing vaginal pH, and improving vaginal moisture.

 

Authenticity of Vitamin D in Modified Vaginal Health Index in Geriatric Subjects (2016)

Conclusion: 200 old ladies were randomly split into two groups. One got vitamin D and one got placebos. Their vaginas were evaluated before treatment, at three months, and at six months to test the effects of vitamin D on vaginal health. Researchers found that the vitamin D group displayed “significantly” better vaginal health at both follow ups and vaginal health improved as vitamin D levels improved.

 

Treatment of Vitamin D Deficiency is an Effective Method in the Elimination of Asymptomatic Bacterial Vaginosis: A Placebo-Controlled Randomized Clinical Trial (2015)

Conclusion: Out of a group of 208 women with both bacterial vaginosis and vitamin D deficiency, half were randomly assigned in this study to take a small 2,000 IU vitamin D3 dose daily for 15 weeks and the other half received a placebo during that time. Vaginal and blood samples were taken before and after the trial. The cure rate for the vitamin D group was 63% vs only 19% in the control group. Keep in mind that 2,000 IU is a very small dose for an adult, so what would the results have been with a higher dose? Our bodies are capable of producing well over 20,000 IU from one sunbathing session. 

 

The Effect of Vitamin D on Vaginal Atrophy in Postmenopausal Women (2015)

Conclusion: 44 postmenopausal women were randomly assigned to receive either vitamin D vaginal suppositories or placebo vaginal suppositories daily for 8 weeks to test the effects of vitmamin D on old-age vaginal atrophy. At the end of the study, those who received the vitamin D suppositories had a much higher count of superficial cells in their vaginal epithelium, lower pH levels, lower reporting of vaginal pain, lower reports of vaginal dryness, and lower reports of vaginal paleness.

 

Chronical Cervical Infections and Dysplasia (CIN I, CIN II): Vaginal Vitamin D (High Dose) Treatment – A New Effective Method? (2014)

Conclusion: This study tested the effectiveness of vitamin D vaginal suppositories on women with chronic cervical infections. The results were very positive with 79% of participants reporting “less vaginal problems,” “less discharge,” and “less problems with sexual intercourse.” After 6 weeks of the therapy only 7% of patients still required infection treatment.

 

Maternal Vitamin D Deficiency Is Associated with Bacterial Vaginosis in the First Trimester of Pregnancy (2009)

Conclusion: In a prospective study involving 469 pregnant women, those who were vitamin D deficient had more than double the rates of bacterial vaginosis compared to the women with adequate vitamin D levels.

 

Also see studies on vitamin D, sunlight, and 

Female Health

 

 

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