Omena, groundnuts, fish, arrowroots and cassava are some of the readily available natural foods that help men amass enough stamina in bed, Science and multiple interviews with experts reveal. The International Journal of Impotence Research projects that by 2025, 322 million men in the world would be suffering erectile dysfunction. Erectile dysfunction (ED) refers to an inability to either produce or maintain an erection that is firm enough to have sexual intercourse. Partners of men with erectile dysfunction experience lower sexual satisfaction, correlated to the degree of ED in their partner. The principal risk factor associated with ED is age, and the increasing prevalence of ED is linked to the global ageing population. Read more at Standard Media.