《本草纲木拾遗》说,红薯能补中、和血、暖胃、肥五脏。《金薯传习录》说,它有多种药用价值:治痢疾和泻泄;治酒积和热泻:治湿热和黄疸:治遗精和白浊;治血虚和月经失调;治小儿疳积。此外,红薯还能生津止渴,治热病口渴。近几年,美国的何·塞维兹教授从红薯中提取了一种活性物质叫去雄酮(DHEA),它能防止结肠癌和乳腺癌的发生。日本癌症研究院通过对26万人的饮食调查发现:熟、生红薯的抑癌率分 “Compendium of Materia Medica Gangmu,” said sweet potato can make up, and blood, warm stomach, fat five internal organs. “Golden Pot Biography” said that it has a variety of medicinal value: cure dysentery and diarrhea; rule liquor plot and heat diarrhea: cure dampness and jaundice: cure nocturnal emission and white muddy; cure blood deficiency and menstrual disorders; cure children 疳product. In addition, sweet potatoes can thirst, cure fever thirst. In recent years, Professor He Sevitz of the United States has extracted an active substance from sweet potato called estrone (DHEA), which can prevent the occurrence of colon and breast cancer. Japan Cancer Institute through 260,000 people diet survey found: cooked, raw sweet potato cancer suppression rate