Thin people can eat. Lycium barbarum can't lose weight Now it is said that everything can lose weight. The main function of Lycium barbarum is nourishing, treating yin deficiency of liver and kidney and benefiting eyes. It can be used for treating deficiency of vital energy, soreness of waist and knees, dizziness and tinnitus, impotence and nocturnal emission, thirst quenching due to internal heat, blood deficiency and chlorosis, blurred vision, etc., and can be safely drunk.