Disordered eating and cardiometabolic risk factors in Chinese women: evidence from the China Health and Nutrition Survey

Disordered eating (DE) is associated with elevated cardiometabolic risk (CMR) factors, yet little is known about this association in non-Western countries. We examined the association between DE characteristics and CMR and tested the potential mediating role of BMI. This cross-sectional study included 2005 Chinese women (aged 18-50 years) from the 2015 China Health and Nutrition Survey. Loss of control, restraint, shape concern and weight concern were assessed using selected questions from the SCOFF questionnaire and the Eating Disorder Examination-Questionnaire. Eight CMR were measured by trained staff. Generalised linear models examined associations between DE characteristics with CMR accounting for dependencies between individuals in the same household. We tested whether BMI potentially mediated significant associations using structural equation modelling. Shape concern was associated with systolic blood pressure (beta (95 % CI) 0<middle dot>06 (0<middle dot>01, 0<middle dot>10)), diastolic blood pressure (DBP) (0<middle dot>07 (95 % CI 0<middle dot>03, 0<middle dot>11)) and high-density lipoprotein (HDL)-cholesterol (-0<middle dot>08 (95 % CI -0<middle dot>12, -0<middle dot>04)). Weight concern was associated with DBP (0<middle dot>06 (95 % CI 0<middle dot>02, 0<middle dot>10)), triglyceride (0<middle dot>06 (95 % CI 0<middle dot>02, 0<middle dot>10)) and HDL-cholesterol (-0<middle dot>10 (95 % CI -0<middle dot>14, -0<middle dot>07)). Higher scores on DE characteristics were associated with higher BMI, and higher BMI was further associated with lower HDL-cholesterol and higher other CMR. In summary, we observed significant associations between shape and weight concerns with some CMR in Chinese women, and these associations were potentially partially mediated by BMI. Our findings suggest that prevention and intervention strategies focusing on addressing DE could potentially help reduce the burden of CMR in China, possibly through controlling BMI.