Selenium—prevents ventricular tachycardia, is a hypolipidemic, and improves diabetic symptoms, congestive heart failure, and cardiomyopathy. Cardiomyopathy is defined as any disease that affects the structure and function of the heart. For example, the heart may become disabled as fibrous tissue partially replaces the heart muscle; the fibrous tissue degrades the heart’s performance and the blood no longer moves efficiently. The World Health Organization recognizes cardiomyopathy as a selenium deficiency. In addition, French researchers showed that chronic heart failure (associated with oxidative stress) appears to be relieved by selenium supplementation.