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Dioscorea dumetorum, also known as the bitter yam, cluster yam, trifoliate yam, or three-leaved yam, [1] is a species of flowering plant in the yam family, Dioscorea. It is native to sub-Saharan Africa and especially common in the tropical regions of West Africa, including Nigeria, Benin, and Ghana. [ 2 ]
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. [19]
Cancer Research UK note that superfoods are often promoted as having an ability to prevent or cure diseases, including cancer; they caution, "a healthy, balanced and varied diet can help to reduce the risk of cancer but it is unlikely that any single food will make a major difference on its own." [32]
A 2021 umbrella review found strong evidence that consumption of dairy products decreases risk of colorectal cancer. [91] Fermented dairy is associated with significantly decreased bladder cancer and colorectal cancer risk. [92] A 2023 review found no association between consumption of dairy products and breast cancer. [93]
Dioscorea bulbifera (commonly known as the air potato, air yam, bitter yam, cheeky yam, potato yam, [2] aerial yam, [3] and parsnip yam [4]) is a species of true yam in the yam family, Dioscoreaceae. It is native to Africa, Asia and northern Australia. [ 1 ]
Dioscorea pentaphylla is a species of flowering plant in the yam family known by the common name fiveleaf yam. It is native to southern and eastern Asia ( China , India , Indochina , Indonesia , Philippines , etc.) as well as New Guinea , Sri Lanka and northern Australia .
In Vietnam, the yam is called củ mài or khoai mài. When this yam is processed to become a medicine, the yam is called hoài sơn or tỳ giải. In the Ilocano of the northern Philippines it is called tuge. In Latin American countries it is known as camote del cerro or white ñame. In Manipuri it is called as "Ha".
[10] Most alternative cancer treatments have not been tested in proper clinical trials. Among studies that have been published, the quality is often poor. A 2006 review of 196 clinical trials that studied unconventional cancer treatments found a lack of early-phase testing, little rationale for dosing regimens, and poor statistical analyses. [11]