Sahyas's Goji berry, also known as wolfberry, is a nutrient-dense fruit that is prized in herbal medicine, considered to have benefits that aid kidney and liver function, improve vision and inhibit aging. Columbia Health notes that some studies have found that goji berry consumption helps improve mental alertness, sleep quality and gastrointestinal health. As with other berries, goji is high in vitamins, minerals and antioxidants. The tiny red fruit can be eaten on its own or as part of a meal or consumed in liquid form.