How a small weight gain affects the heart

Gaining even a little weight over time may alter the structure and function of heart muscle, affecting long-term risk of heart failure, according to new research.

The seven-year study of healthy middle-aged adults found that those who gained even as little as 5% of their weight, were more likely to have thickening and enlargement of the left ventricle.

“Increasing weight was associated with increases in left ventricular mass, wall thickness, and concentricity, with modest effects on end-diastolic volume and ejection fraction,” write the authors.