Objective To explore the distribution characteristics of TCM Constitution of nonalcoholic fatty liver (NAFLD) in Changsha area and its correlation with lifestyle. Methods Multi stage cluster random sampling method was adopted to investigate the physical fitness of the population in Changsha area. Results 1. The distribution of TCM Constitution constituent with NAFLD as follows: (1) Constitution ratio of the first TCM constitution: flat constitution 42.9%, phlegm-dampness constitution 17.1%, damp-heat constitution 10.2%, Yang deficiency const...