Being a great source of potassium that helps in regulating the nerve activity of the brain. As potassium affects the nerves activity, hence high content of potassium enhances the cognitive function of the brain. (2)
Always go for yams that are bright in colour with no blemishes.
Yams od have some side effects, if not consumed in moderation, hence it should be avoided by lactating mother, as it might be fatal for the child. Moreover, people with protein S deficiency should avoid the intake of yams because that might lead to an increased risk of forming blood clots. (3)
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Description
Yam is generally the name given to various plant spices in the genus Dioscorea including Dioscorea alata (white yam), Dioscorea bulbifera (potato yam), Dioscorea cayenensis (yellow yam), Dioscorea esculenta (Asiatic yam) and Dioscorea batatas (Chinese yam) that are cultivated for their edible tubers. Although these species are not the same as the sweet potato, Ipomoea batatas, perhaps which is referred to as a yam in the United States. These are herbaceous annual or perennials with climbing or trailing vines. These vines are usually smooth or prickly, reaching 10 m or more in length depending on the variety. The leaves of the plant are usually oval to heart-shaped with petioles, which happen to be of the same length or slightly longer, than the leaf blade itself. While some varieties have spikes at the base of the leaves. Yams are usually annual plants that are harvested after one season, but some of them are perennial. The origination of the yam is not certain. Yams are said to have an earthy flavour with a hardy taste, but when cooked they turn creamy and firm.Â