Brains of Lean and Overweight Individuals (IMAGE) University of Cambridge Caption Comparison of grey matter (brown) and white matter (yellow) in sex-matched subjects A (56 years, BMI 19.5) and B (50 years, BMI 43.4) Credit Lisa Ronan Usage Restrictions In connection with this research only. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.