Solutions for immunity Learn the facts about the immune system, its function in your life and key vitamins and minerals that help support it. 6 signs of weakened immunity and how to recognize them Learn the 6 signs of a weakened immune system and some simple tips on how you can boost your immunity. Read more Vitamins and minerals for immunity Learn about key immunity-boosting micronutrients from this comprehensive article. Read more Everything you need to know about cold and flu Find out what you can do to boost your immunity against cold and flu. Read more How your immune health changes over time Learn how your immune system works at different times in your life and what you can do to boost its defensive power. Read more What is immunity? Facts and functions of the immune system Learn more about immunity. What is the immune system? What are the types of immunity and how does your immune system work? Read more