All U.S. adults could be overweight in 40 years

By Amy Norton

NEW YORK (Reuters Health) - If the trends of the past three decades continue, it's possible that every American adult could be overweight 40 years from now, a government-funded study projects.

The figure might sound alarming, or impossible, but researchers say that even if the actual rate never reaches the 100-percent mark, any upward movement is worrying; two-thirds of the population is already overweight.

"Genetically and physiologically, it should be impossible" for all U.S. adults to become overweight, said Dr. Lan Liang of the federal government's Agency for Healthcare Research and Quality, one of the researchers on the study.

However, she told Reuters Health, the data suggest that if the trends of the past 30 years persist, "that is the direction we're going."

Already, she and her colleagues point out, some groups of U.S. adults have extremely high rates of overweight and obesity; among African- American women, for instance, 78 percent are currently overweight or obese.

The new projections, published in the journal Obesity, are based on government survey data collected between the 1970s and 2004.

If the trends of those years continue, the researchers estimate that 86 percent of American adults will be overweight by 2030, with an obesity rate of 51 percent. By 2048, all U.S. adults could be at least mildly overweight.

Weight problems will be most acute among African-Americans and Mexican- Americans, the study projects. All black women could be overweight by 2034, according to the researchers, as could more than 90 percent of Mexican-American men.