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Heart Cancer: The Organ's Rare Resistance Explained
26 May
Summary
- Heart muscle cells divide infrequently after early life, hindering cancer.
- Lifestyle factors like smoking and obesity risk both cancer and heart disease.
- Heart tumors are rare but can cause symptoms like breathlessness and fainting.
The heart possesses a unique characteristic as one of the body's most cancer-resistant organs. This resistance stems from its muscle cells, cardiomyocytes, which divide infrequently after infancy. Unlike tissues that constantly renew, the heart primarily enlarges existing cells when adapting to stress, significantly reducing the chance for DNA copying errors that lead to cancer.
Cardiologists emphasize that lifestyle choices critical for heart health also lower cancer risk. Habits such as smoking, obesity, poor diet, physical inactivity, and chronic inflammation create a biological environment that can foster both cardiovascular disease and abnormal cell growth.
Although primary heart tumors are exceptionally rare, they can manifest with symptoms. These may include posture-related shortness of breath, unexplained fainting, new-onset irregular heartbeats, stroke-like symptoms, and persistent general fatigue or weight loss. However, these signs are not exclusive to heart tumors and require thorough medical evaluation.
