What causes an enlarged heart?

What causes an enlarged heart?

Any disease that makes your heart work harder can enlarge it. Just like your arm muscles get bigger when you work them out, your heart gets bigger when it has to work harder.

Common causes of an enlarged heart include:

• Anemia.
• Arrhythmia (heart rhythm changes).
• Cardiomyopathy.
• Congenital heart disease.
• Heart valve disease.
• Thyroid disease.