Are you weakening your immune system without even knowing it? Answer Dr. Susan Blum’s four questions to determine if you have immune invaders in your system. Plus, 3 disease-fighting steps to fortify your immunity and ward off illness naturally!

View Part 2 of Easy Fixes to Boost Your Immunity.

View Part 3 of Easy Fixes to Boost Your Immunity.

Read more about Dr. Oz’s 12 natural immunity boosters.

Dr. Oz goes where he's never gone before. He's letting you eat fast-food and it's not what you expect. Learn which fast food meals you can eat under 500 calories while still enjoying the food you love.