Christine Marquette explains that there are many things that can be done to build up the immune system, including stress management, physical activity and nutrition.
Marquette explains that stress can depress your immune system, and that you should get lots of fruits and vegetables (especially those with antioxidants), and lean protein. She also recommends probiotic-rich yogurt, milk, or cheese. How does the immune system function? What is psychoneuroimmunology?