Women's Wellness Research and Evidence

A snapshot of how much has been published

We counted PubMed records for ten topics on 2026-10-22 using the NCBI E-utilities search (database: pubmed, return type: count). The exact query text is shown so you can repeat it. [1]

These counts show how much has been published, not whether a treatment works. A large number can reflect decades of interest, many small studies, or studies of the disease rather than a treatment. A small number does not mean a treatment fails; it may mean it has not been tested well.

What the research in this section tells us

• Folic acid before and during pregnancy has high-quality trial evidence for preventing neural tube defects. [2]
• Pelvic floor muscle training can improve, and in some people resolve, urinary leakage. [3]
• For period pain, exercise has low-quality evidence of benefit, and the supplement and herb trials were low or very low quality. [4][5]
• For hot flashes, hormone therapy is the most effective treatment, and supplements have mixed or limited evidence. [6][7]
• For PCOS, the international guideline says evidence remains of low to moderate quality, and inositol evidence is limited and inconclusive. [8][9]
• For endometriosis, the ESHRE guideline could not recommend specific non-medical interventions. [10]

How to judge a study on a women's health topic

1. Who was studied? Results in healthy students may not apply to people with endometriosis, PCOS, perimenopause or pregnancy. The Cochrane review of supplements for period pain, for example, drew mostly on students in their late teens or early twenties. [5]
2. Randomized or observational? Randomized trials with a placebo group are better at showing cause than studies that only observe.
3. What was measured? A change in a blood marker is not the same as fewer symptoms or better quality of life.
4. How big and how long? Small, short trials often disagree with each other.
5. Placebo effect. Menopause symptom trials show strong placebo responses, which is why a placebo comparison matters. [11]
6. Who paid and who wrote it? Look for conflicts of interest and for reviews that appraise risk of bias.
7. Product versus plant. A study of one extract does not apply to another product. See evaluating safety claims.
8. Safety. Absence of reports is not the same as proven safety, especially for herbs. See medication interactions.

Browse more on our Research Library. Related pages: black cohosh, soy, red clover and hormone claims and women's health starting guide.