Weight loss improves memory, research shows

mostly gastric bypass surgery, which creates a smaller stomach and bypasses part of the small intestine. The other 41 obese patients did not have surgery.

After 12 weeks, all participants took the same set of memory tests a second time. Findings:

The surgery patients, who had lost an average 50 pounds, showed improvement in multiple cognitive abilities, including memory and executive functioning, which includes organization skills.

Normal lapses vs. warning signsThough everyone occasionally blanks, some lapses are more cause for concern.

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