Many of them have high levels of irritation caused by belly fat. That fat can cause other problems too, Dr. Oz says, including problems with impotence. "When you've got a lot of fat on you, the fat comes alive. It becomes another organ. And that organ takes estrogen, for example, and manipulates it so that you get more problems with resistance to insulin. But it takes, in the boys, their testosterone, which they're making normally, and it converts it to estrogen."
Additionally, three of the teens are either diabetic or prediabetic and four have fatty liver syndrome. "Belly fat sends chemicals up to the liver, which makes the liver irritated. But in addition, the food that you're eating, if there's too much of it, goes up to the liver. And the liver's main job is to process whatever you put in your mouth and make it what you can use and send it out to the body. But if you overwhelm it, especially with simple carbohydrates like sugars, then the liver stores it as fat in the liver. That can actually cause hepatitis and inflammation of the liver."
Half of them have another problem caused by belly fat—metabolic syndrome. This serious condition is a potentially lethal combination of high blood pressure, high bad cholesterol and low good cholesterol, and an insulin blockage that can lead to diabetes.