You know that the immune system protects against disease, infection, and helps you recover after an injury, but did you know that 70-80 percent of your immune system is located in your digestive system? Keep up your immunity by eating foods high in nutrients, like vitamins A, C, D, and E. Unprocessed foods contain more nutrients. Seniors can get the nutrients they need from whole foods, including legumes, nuts and seeds, whole grains, and fresh fruits and vegetables, and even animal protein. Older people tend to eat less and have less variety in their diets. According to Harvard Health Publishing, “Cold weather and respiratory disease, including flu, go hand in hand.” This is especially true for older adults who don’t retain body heat as well as they used to. In addition to exercise and getting plenty of sleep, prevent colds and the flu by piling your plate high with these immune-boosting superfoods this winter.