What is one of the risk factors associated with the development of dilated cardiomyopathy?

Excessive alcohol intake is recognized as a significant risk factor for the development of dilated cardiomyopathy. Chronic alcohol consumption can lead to direct toxicity of cardiac myocytes, resulting in impaired myocardial function and the eventual dilation of the ventricles. This condition is often referred to as alcoholic cardiomyopathy, where the continuous exposure to alcohol affects heart structure and function.

In contrast, decreased physical activity is not directly linked to the onset of dilated cardiomyopathy, although a sedentary lifestyle can contribute to other cardiovascular risks. Similarly, young age is typically associated with lower prevalence of cardiomyopathies, and increased exercise capacity usually reflects good cardiovascular health rather than posing a risk. These facts help reinforce why excessive alcohol intake is the correct association, as it directly impacts the heart and can lead to its functional deterioration.