RESUMO
OBJECTIVE: To explore the essence of Spleen-Kidney Deficiency in middle-aged patients. METHODS: Investigation was carried out in 773 cases of 50-69 years old to assay 34 parameters in them, including blood lipid, oxidation and anti-oxidation related substance, sex hormone, liver and renal function, immune function, blood routine, blood pressure and lung vital capacity, etc. RESULTS: Spleen Deficiency Syndrome is closely related with lipid metabolism disorder; Kidney-Qi Deficiency Syndrome is closely related with hypoimmune function; Kidney-Yin Deficiency Syndrome is closely related with lipid metabolism disorder and hypertension, and Kidney Yang Deficiency is closely related with weakness of anti-oxidation capacity, hypoimmunity, the internal environment disorder of sex hormone and aging, manifested as multiple functions abating. CONCLUSION: Spleen Deficiency, Kidney-Qi Deficiency and Kidney Yang Deficiency are different layers of a gradually developed and aggravated pathological process, but Kidney-Yin Deficiency could not be listed into this layer.