What can I do to support my immune system? I get asked this question constantly during the winter months! First of all, the immune system is very complex and there are so many factors involved in maintaining a balanced immune system— sleep, stress, environmental toxins, age, food, etc. There is no one food or nutrient that will dictate how your immune system is functioning or responding by itself. However, there are a variety of important nutrients that we know the immune system requires to function optimally and it can be beneficial to make sure you are getting enough of these on a daily basis!