The conventional wisdom has always been that the heart cannot generate new muscle cells so you die with the same heart you were born with, report Norbert Herzog and David Niesel in this week’s installment of UTMB’s Medical Discovery News. However, new research suggests that about half of your heart’s muscle cells are normally replaced over a lifetime. The excitement around these findings is the suggestion that science might be able to develop methods or drugs to accelerate or induce heart muscle regeneration. If scientists actually found a way to regrow muscle cells in the damaged areas, many lives could be saved. MDN airs locally at 10 a.m. Saturday on KUHF.