明代药物学家李时珍,在《本草纲目》上收载了这样一个故事:唐朝元和七年,顺州南河县(今广东德庆县)有个叫何田几的人,从小身体虚弱,没有性欲,到了58岁还不娶妻。后来偶然在山中挖到一棵形似红薯的块根,带回家中煮而食之。觉得好吃,便又上山挖了一大筐,天天煮食。连吃了七天,突然产生了想找配偶的念头;又吃了几个月,身体逐渐壮了起来,力气也增大 In the Compendium of Materia Medica, Li Shizhen, a pharmacologist in the Ming Dynasty, put a story like this on the Compendium of Materia Medica: In the Tang Dynasty and in the seven years, Nanhe County, Shunde (now Deqing County, Guangdong Province) By the age of 58, she is not married yet. Later accidentally dug in the mountain a sweet potato root shape, brought home and cook it. Feel delicious, then dug up a big basket, cooking every day. Even eating for seven days, suddenly had the idea of ​​looking for a spouse; also eat a few months, the body gradually became stronger, strength also increased