This is not surprising – an increase in body fat and a decrease in physical activity are the direct causes of type 2 (as opposed to type 1) diabetes. In fact, much of the health effects of obesity and physical inactivity are mediated through diabetes.
这毫不奇怪，因为体内脂肪的增长与体力活动的下降正是二型糖尿病（一型则相反）的直接成因。事实上，肥胖和缺乏运动所导致的大部分健康影响都会通过糖尿病来体现。