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Apolipoprotein E (
APOE) ε4 is the single most important genetic risk factor for cognitive impairment and Alzheimer disease (AD), while lifestyle factors such as smoking, drinking, diet, and physical activity also have impact on cognition. The goal of the study is to investigate whether the association between lifestyle and cognition varies by
APOE genotype among the oldest old.
Methods and findings
We used the cross-sectional data including 6,160 oldest old (aged 80 years old or older) from the genetic substudy of the Chinese Longitudinal Healthy Longevity Survey (CLHLS) which is a national wide cohort study that began in 1998 with follow-up surveys every 2–3 years. Cognitive impairment was defined as a Mini-Mental State Examination (MMSE) score less than 18. Healthy lifestyle profile was classified into 3 groups by a composite measure including smoking, alcohol consumption, dietary pattern, physical activity, and body weight.
Mumbai (Maharashtra)/New Delhi [India], May 31 (ANI/Business Wire India): Tobacco use is one of the major risk factors for multiple chronic diseases, including lung disease. In India, use of tobacco accounts for approx. 1.35 million deaths every year and is one of the major causes of death and disease.