科学家认为主要有“两大”原因，即缺乏锻炼和食物摄入量的增加：美国人摄取的卡路里远比消耗的要多得多。
The "Big Two," as scientists call the leading factors, are reduced exercise and increased food consumption: Americans are ingesting more and more calories than they're burning.
肥胖最主要的原因众所周知：不良的饮食习惯，缺乏体育锻炼，以及遗传性肥胖。
The most commonly implicated causes of obesity are well known: poor diet, lack of physical activity, and genetic predisposition.
损害健康心脏的原因：缺乏锻炼。
应用推荐