Whilst its an alarming statistic, we don't know what the future holds. These 'facts' are usually just predictions of the future because of the lifestyles choices of a people, that this time being the people of the US. Whilst I definitely believe that there will be more overweight or obese people by 2020 in the US. 75% is ridiculous.
At least we Europeans can continue to make fat jokes about the yanks

*casual stereotypical comment*