Wild Yam Extract
Commonly used for
Women's Health
Where to Buy
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The cheapest product is usually low quality, but more expensive doesn’t always mean better.
What is it? / Overview
Diosgenin is a plant sterol used industrially as a starting material to synthesize steroid hormones in a laboratory -- but the human body cannot perform that same conversion, so oral or topical wild yam does not raise progesterone levels. A controlled trial of topical wild yam cream found no effect on menopausal symptoms, hormone levels, or lipids at all.
How is it used? / Administration
Form: Dioscorea villosa root extract (topical cream or oral), standardized to diosgenin
Typical dose studied: No validated effective dose -- the negative controlled trial used a topical cream
Timing: Not established
Ships trigger-empty given the negative controlled trial and the debunked 'converts to progesterone' claim -- also worth flagging that some commercial wild yam products have been found illegally spiked with undeclared synthetic progesterone, an unlabeled hormone-exposure risk distinct from the herb itself.
How well does it work? / Evidence
? Emerging / limited evidence
Who should avoid it?
Avoid with: Cancer — active or within past 12 months; Endometriosis
Interacts with: Estrogen-based hormone therapy, oral contraceptives -- theoretical interaction given phytoestrogenic activity
Already taking it? The one controlled human trial (topical cream) found no effect on menopausal symptoms, hormone levels, or lipids -- worth knowing that before continuing. Also worth knowing that the body cannot convert diosgenin (wild yam's active compound) into actual progesterone despite persistent marketing claims to that effect; that conversion only happens industrially, in a lab.
Research & references
Komesaroff PA et al. (2001). Effects of Wild Yam Extract on Menopausal Symptoms, Lipids and Sex Hormones in Healthy Menopausal Women. Climacteric. Semwal P et al. (2021). Diosgenin: An Updated Pharmacological Review and Therapeutic Perspectives. Oxidative Medicine and Cellular Longevity.
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