re: 25% of Americans projected to be severely obese by 2030...

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Exercise makes a small portion of what you can do. It’s a good supplement, but diet is by far the factor.

Calories taken in can’t exceed calories burned.

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Inactivity rather than overeating could be driving the surge in Americans’ obesity, according to a study by a team of Stanford University School of Medicine researchers.

Examining national health survey results from 1988 through 2010, the researchers found huge increases in both obesity and inactivity, but not in the overall number of calories consumed.

“What struck us the most was just how dramatic the change in leisure-time physical activity was,” said Uri Ladabaum, MD, associate professor of gastroenterology and lead author of the study. “Although we cannot draw conclusions about cause and effect from our study, our findings support the notion that exercise and physical activity are important determinants of the trends in obesity.

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