Why Heart Cancer Is So Rare It (Almost) Never Happens

0:00 Cancer isn't one disease — but one organ is almost immune 0:20 The heart: practically cancer-proof 0:44 Heart cells are terminally differentiated 1:05 Cardiac muscle cells rarely divide 1:27 What does cell division have to do with cancer? 1:36 How cancer develops: growth gone rogue 1:42 From 1 cell to 30 trillion — exquisitely regulated 2:16 DNA mutations and how cancer cells form 2:49 Why mutations accumulate with age 3:05 Rogue cells that only know how to grow 3:32 Why skin, colon, and breast cancers are more common 4:00 The heart doesn't divide and avoids carcinogens 4:21 Exceptions: non-cancerous tumors and metastasis 5:00 0.002% isn't zero — but the heart beats on