Ventricular hypertrophy, or the thickening and enlargement of heart ventricles due to the accumulation of scar tissue, is thought to be a root cause of many heart ailments. To investigate how diet relates to this condition, researchers analyzed eating patterns and left ventricular mass (the size of the left ventricle of the heart, where enlargement is most common) of over 1,700 adults without history of heart attack or stroke. The scientists found that those most closely adhering to a Mediterranean Diet had a left ventricular mass that was 4% less than the rest of the study population, a reduction greater than that observed in people with moderate-to-heavy physical activity (another factor that supports heart health). In fact, for each point increase on the Mediterranean Diet Score (0-9), left ventricular mass was 1.98g lower (average left ventricular mass was 189g).
American Journal of Cardiology. 2015 Feb 15;115(4):510-4. (Gardener H et al.)