Objective To investigate the interaction between the angioensin-converting enzyme( ACE) gene insertion/deletion( I/D) polymorphism and the behavioral lifestyle on the longevity phenomenon in Uygur population in Xinjiang's Hotan Prefecture. Methods From the Uygur people living in Xinjiang' s Hotan Prefecture from 1992 to 2014,we enrolled 144 naturally longevous people aged ≥90( longevous group) and 144 people aged 60-80 without sibship with the longevous group( control group). We surveyed them with a questio...