วันพุธที่ 3 มิถุนายน พ.ศ. 2552

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There is no one single reason for the rise in obesity nor is it an overnight phenomenon, experts say. Changes in eating patterns -- like the portions of food consumed, which have grown over the last 20 years and the types of food now available, like fast food and pre-packaged meals which may be high in fats, sugars and calories -- have played a role in the weight gain, the CDC says.
Modern life has also made Americans more sedentary. "Technology has created many time and labor saving products. Some examples include cars, elevators, computers, dishwashers, and televisions. Cars are used to run short distance errands instead of people walking or riding a bicycle," the CDC says.
Meanwhile, some 41 million American kids participate in organized, extracurricular youth sports like soccer, baseball, and football, which can balance the reported drop in physical activity at school. But, proponents of increased physical activity contend that not every child is able to take part in the sometimes-expensive organized play, making physical education in schools essential.

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