BMI and Lifestyle factors with All-cause mortality

So with a large cohort prospective epidemiological study, there is a challenge to the ideas around BMI as a risk factor.

Although people with a higher BMI can have lower risk of premature mortality if they also have at least one low risk lifestyle factor, the lowest risk of premature mortality is in people in the 18.5-22.4 BMI range with high score on the alternate healthy eating index, high level of physical activity, moderate alcohol drinking, and who do not smoke. It is important to consider diet and lifestyle factors in the evaluation of the association between BMI and mortality.

An open article in 21st October BMJ

http://www.bmj.com/content/355/bmj.i5855

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