Think of your ab muscles as the meat in the middle of a fat sandwich. On top of them is subcutaneous fat, the stuff you pinch as you look in the mirror. Below them is visceral fat, which is the type that takes up residence next to your internal organs — in excessive amounts if you continually overdo it on calories and experience too much pent-up stress. "When you fill up those subcutaneous areas, fat winds up getting stored where it shouldn't, in your deep abdomen or your liver," explains Arthur Weltman, PhD, exercise physiology professor at the University of Virginia in Charlottesville. Visceral fat has been linked to heart disease, type 2 diabetes, and metabolic syndrome, he notes.
It’s not just about weight loss. Having great gut health is linked to good health throughout your body. Scientists in this rapidly growing field are finding connections between gut microbes and the immune system, weight loss, gastrointestinal health, , allergies, asthma, and even cancer. With every study that’s published, scientists become more convinced that having a healthy gut leads to having a healthy body.