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There is little modern clinical research on Dioscorea villosa, and the one study of a wild yam-containing cream for menopausal symptoms failed to find any value from this therapy. [18] According to the American Cancer Society , there is no evidence to support wild yam or diosgenin being either safe or effective in humans.
The similarities, at molecular level, of an estrogen and a phytoestrogen allow them to mildly mimic and sometimes act as an antagonist of estrogen. [2] Phytoestrogens were first observed in 1926, [ 2 ] [ 5 ] but it was unknown if they could have any effect in human or animal metabolism.
[8] [irrelevant citation] Wild yams are an important crop, as they have been used to prevent menstrual cramps, stomach cramps, and general pain for centuries. During the 1950s scientists found that the roots of wild yams contained diosgenin which is a plant-based estrogen; diosgenin is hypothesized to aid in chemical defense against herbivores.
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Diosgenin, a phytosteroid sapogenin, is the product of hydrolysis by acids, strong bases, or enzymes of saponins, extracted from the tubers of Dioscorea wild yam species, such as the Kokoro. It is also present in smaller amounts in a number of other species.
"Sweet potatoes have a starchy texture and sweet flesh," Gavin said. "The major types are grouped by the color of the flesh, not by the skin." In the grocery store, you'll likely see orange, white ...
Yams are in the family Dioscoreaceae, which contains hundreds of species of yams such as the Chinese yam and air potatoes, while sweet potatoes are in the family Convolvulaceae, which is the same ...
However, a number have been identified, including kaempferol, diosgenin (found in yam), apigenin (found in chasteberry), [1] [3] naringenin, and syringic acid, among others. [2] In addition, 3,8-dihydrodiligustilide from Ligusticum chuanxiong is a potent progestogen ( EC 50 = 90 nM), whereas riligustilide is a weak progestogen (EC 50 ≈ 81 μM).