No one really knows why people in the United States are getting so much fatter so quickly.
Some laugh and say the reason is obvious — too little exercise and too many french fries.
Others have wondered if some other factor, such as toxic chemicals, might not play a role.
One thing is clear: The increase in obesity is going hand in hand with a rise in diabetes and other conditions that are adding to health care spending today and could eventually lead to deterioration in disability insurance morbidity and life insurance mortality experience.