Yohimbe has been used for centuries as an aphrodisiac for men and has similar effects to women. Yohimbe's energizing effects stem from its ability to increase blood flow to the genitals, both male and female. It is thought to stimulate pelvic nerve ganglia and thus is helpful for men with erection problems. Maca root is added to food to boost libido and energy. It has also been studied as a remedy for sexual dysfunction, depression, hair loss, hot flashes, and fertility.