The relationship between waist‐to‐hip ratio, BMI index and cognitive impairment in those aged 40 years or above: A cross‐sectional study in a rural area of Xi’an, China

Background The relationship between obesity, body weight and cognitive impairment is still controversial. To analyze the correlation between BMI index, waist‐to‐hip ratio and cognitive impairment. Method This study is a cross‐sectional survey conduct during October 2014 to March 2015. Subjects who aged 40 and above and lived in a village in the suburbs of Xi'an, China were selected as the research sample. Cognitive function was assessed using...