Dr. Jeremy London shares why nutrition is essential for heart health Cardiothoracic surgeon Dr. Jeremy London discusses the best lifestyle approach to maintaining good heart health. NEW You can now listen to Fox News articles! With the month of February marking American Heart Month, doctors say improving cardiovascular health doesn’t require an expensive diet overhaul or strict food rules — just a few smart, heart-healthy grocery-store swaps. "Focus on the additions," said Tara Schmidt, a