By Dr. Mercola
The growing of sweet potatoes dates back to 750 B.C. Sweet potatoes belong to the Convolvulaceae or morning glory plant family, and should not be confused with regular potatoes and yams, both of which are entirely different from sweet potatoes.
There are about 400 varieties of sweet potato, differentiated by their skin and flesh color, which ranges from cream, yellow and orange to pink …read more
Source: mercola
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