脾胃虚引起的体重下降主要表现为长期轻微的体重下降或体重持续不升，丌是明显的体重下降。其他表现如脾气变差、脸色暗淡、According to their traditional Chinese medicine, the spleen plays a "role in transforming and transporting food and drinks, driving water metabolism and controlling the production, transportation and distribution of blood" and if it is weak it cannot do this job.脾是传统中医学中的“转化和输送食物、饮料、驱动水质代谢并控制血液的生成、输送和分配”，如果脾虚则不能胜任。因此，凡是食物代谢失调、水质代谢失调和血液不畅就会因此而影响到体重正常的增长，从而引起体重下降。