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Bariatric surgery reduces CV events, but mechanisms remain a mystery

The latest data from the Swedish Obese Subjects study show that bariatric surgery reduces the risk of cardiovascular events and CV death among obese individuals, compared with usual care. But weight loss is not the reason behind this reduced risk, meaning that guidelines that use BMI to determine who will get such surgery need updating, say the authors and an editorialist. (Source: theHeart.org)