Coffee won’t affect your heart rhythms. A study pitting days of coffee drinking against days of abstaining found no significant difference in the number of premature atrial contractions — when the heart seems to “skip a beat.” Read more

Living near noisy roads can raise your blood pressure. Experts say the new findings point to the need for tighter controls on both traffic and noise pollution. Read more

Feds propose overhaul of U.S. organ donor system. That could include breaking up the monopoly of the nonprofit that has run it for the past 37 years. Read more