Yes, the wolfberry is a kind of very fantastic food or medicine natural good for your health. After long time eating this, your face will turn to pink and you eyes will be brighter. Why? It just because it contains abundant of polysaccharides, protein free amino acid, taurine, vitamin B1, B2, E, C, especially, the carotene's containing quantity is very high. Besides, a lot of mineral such as Potassium, sodium, calcium, magnesium, iron, copper, manganese, zinc, selenium are contained in this good fruit. So we can use it to heal the disease of dizzy or light-headedness as well as hypopsia or weak eyes sight. You can eat it very day but not too much, you would better take it less than 30 gram, or the rest of nutrients will waste if your body can not absorb such much.