Is cardio myopothy hereditary?

Some are...: A few types of cardiomyopathy are hereditary such as the type that has claimed the lives of several young atheletes. Most cardiomyopathies are due to heart and/or lung disease.

Sometimes: Cardiomyopathy (cm) is weakness of the heart muscle. This can be caused by alcoholism, high blood pressure, certain drugs, and other environmental exposures. We have an increasing awareness of many genetic causes, too. Several hundred genes can have errors (mutations) that can cause different types of cm, including hypertrophic, dilated, and restrictive cm. These often run in families.

Sometimes: Yea there are some hereditary causes of cardiomyopathy. There is genetic testing available for those. And there are some causes that are not linked to genes.