Steer Clear of the Flu With These 6 Immunity-Boosting Foods

Clinical and holistic dietitian Esther Blum explains that bone broth is rich in glutamine and glycine, two amino acids that "help repair cells and heal gut inflammation." During the colder months, Esther starts each day with a cup of bone broth and calls it her new "drug of choice." She says it has played a major role in keeping her family healthy and flu-free this year.