According to the National Institutes of Health, there are 60 to 70 million people affected by digestive diseases in the United States. The old proverb tells us "you are what you eat," and the latest science shows that this may be more true than we even thought. Diet can have a profound and surprising effective on both physical and mental health. What you eat can cause brain atrophy or cause you to act drugged, and your child's acting-out behaviors might be related to his or her diet. Most of your body's immune system is in the gut, so pathology and dysfunction in the gut and imbalanced gut flora can cause neuroinflammation and possibly even neurodegenerative disease over time. In chapters that will fascinate, readers will learn about the intriguing world of bad bugs, cytokine storms, and the world in your belly that influences your brain.