Doing what I do, I have a lot of folks come to me with problems like heartburn, constipation, gas and bloating—things that make you think right off the bat, “That’s a digestive issue.” But what about problems like fatigue or weight gain? Even allergies, joint pain or skin problems? What a lot of people don’t realize is that all of these things are connected, and they all come back to your gut. I have a new book coming out called The Road to Perfect Health, and in it I talk about the vast numbers of bacteria in your body, especially in your digestive tract (which is where roughly 80 percent of your natural defenses are found). And when a healthy digestive balance is upset because of things like poor diet, stress or other factors, the result can be not only poor digestion, but a total breakdown in health.