This study investigated the correlation between dietary iron intake and mortality in diabetic individuals. Using data from the National Health and Nutrition Examination Survey (1999-2014) encompassing 5970 participants, Cox proportional hazard models analyzed the association between iron intake and all-cause, cardiovascular, and cancer mortality. Results showed a nonlinear relationship between iron intake and all-cause mortality, with an optimal intake range of 11.1-14.4 mg/day. Higher iron intake might increase all-cause mortality risk in men, while potentially offering a protective effect in women. No significant association was found between iron intake and cardiovascular or cancer mortality.

Chenchen Yang, Tingting Hu, Chenglin Li, Aifeng Gong