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, including the "80/20" rule for eating whole foods. NEW You can now listen to Fox News articles! A daily glass of orange juice might do more than deliver vitamin C. It may influence gene activity in ways that support heart health, according to new research. In a small but detailed study, 20 healthy adults drank about