Forget the rhino horn, hyena eyeballs, and the Viagra. Changing your diet can have a better and more long-term effect on your sex life. And it's cheaper ! Foods rich in L-Arginine like granola, oatmeal, peanuts, cashews, walnuts, dairy, green vegetables, root vegetables, garlic, ginseng, soybeans, chickpeas and seeds improve male sexual function. Foods rich in Omega-3 fatty acids like mackerel, salmon and wild salmon improve circulation resulting in greater erectile response. Soy improves both male and female sexual function.