Goji berries, like most berries, have beta-carotene which promotes healthy, glowing skin. These berries help protect and enhance the immune system and reduce tough cold symptoms because of the high amount of vitamin C. One of the very few superfoods that have a wide range of trace minerals, they are rich in zinc, calcium, germanium, selenium and phosphorus. With more iron than spinach, all 18 amino acids, vitamins A, C, E and the B vitamins, they might be even more nutrient dense than most other berries.