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According to this story, a study of 3,362 people showed that blood pressure and BMI were associated with heart failure.

Not surprising, since the BMI was a model developed to predict the risk of suffering from weight-related illnesses such as heart disease. That means the orginal BMI researchers took a group of real people and tracked their health and looked for factors that related to their health outcomes. BMI was such a factor.

But, do we really need researchers to tell us that being overweight is bad for your health?