These tiny, nutrition-rich fruits are known as "happy berries" in China, where they are held in high regard for their aphrodisiac powers. It is in this nation that the berries are most often found, worked into both savory and sweet dishes and even used as the base of wine. However, as word of goji berries' nutritional prowess spread during recent years, they have become increasingly available around the world. It is now known that goji berries offer a higher concentration of beta carotene than most fruits. Also, clinical tests have shown their potency for treating metabolic syndrome, a precursor to erectile dysfunction.