Size matters: Obesity leading risk factor of left atrial enlargement during aging

Aside from aging itself, obesity appears to be the most powerful predictor of left atrial enlargement (LAE), upping one's risk of atrial fibrillation (the most common type of arrhythmia), stroke and death, according to findings published in the November 17, 2009, issue of the Journal of the American College of Cardiology.

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