Billions of dollars are spent every year on medications that reduce the risk of heart disease — the No. 1 killer in the United States.
But some people feel powerless to prevent it: Many of the risk factors seem baked into the cake at birth. Genetic factors can have a huge impact on people's chances of dying of heart disease, and it has long been thought that those factors are almost always outside of one's control.
Recent research contradicts this, though, and that should give us all renewed hope.