Evidence supporting the use of: Dioscorea oppositifolia
For the health condition: Menstrual Irregularity

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Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Dioscorea oppositifolia, also known as Chinese yam or wild yam, has a long history of use in traditional medicine systems, particularly in Traditional Chinese Medicine (TCM) and Ayurveda. In TCM, Dioscorea oppositifolia is considered beneficial for nourishing the spleen, stomach, and kidneys, and it is sometimes included in formulas aimed at addressing menstrual irregularities. However, the primary Dioscorea species cited for "female health" in Western herbalism is Dioscorea villosa (wild yam), rather than D. oppositifolia. There is a traditional belief that certain constituents of Dioscorea, such as diosgenin (a steroidal saponin), might influence hormone balance, which could theoretically impact menstrual cycles. However, it is important to note that diosgenin itself does not convert to human hormones in the body.

On the scientific front, there is little to no robust clinical evidence supporting the effectiveness of Dioscorea oppositifolia specifically for menstrual irregularity. Most studies and reviews focus on other species or on the isolated compounds in laboratory settings, not on actual effects in humans with menstrual issues. The rating of 2 reflects the presence of traditional use and some theoretical rationale, but a lack of well-controlled human studies or clear clinical efficacy for this specific indication.

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