Although obese individuals are at a 35% higher risk for Alzheimer's disease than healthy-weight individuals, it might be possible to reduce the risk by losing weight through bariatric surgery. "Changes in Brain After Bariactric Surgery," published in Journal of Clinical Endocrinology & Metabolism by a group from University of São Paolo in Brazil, described alterations in brain activity and cognitive function in obese women following bariatric surgery. "Our findings suggest the brain is another organ that benefits from weight loss induced by surgery," said study author Cintia Cercato, MD, PhD, in a news release from the Endocrine Society on News Wise. The team of researchers conducted a longitudinal study of 17 obese women undergoing Roux-en-Y gastric bypass (RYBG) surgery. The women were analyzed using positron emission tomography (PET) for brain function prior to and six months after surgery. Sixteen lean women were also evaluated to serve as controls.