Oct 23, 2014 04:35 PM EDT By J Baulkman, UniversityHerald Reporter

Most adults in the United States fail to meet recommended daily levels of 10 key nutrients, and those with disabilities have even worse nutrition than average.

Researchers from the University of Illinois at Urbana-Champaign found that an estimated 10 to 25 percent of adults fit into one or more categories of disability, from those who have difficulties with activities of daily living, such as dressing, bathing and eating, to those who cannot use their legs or struggle to accomplish routine tasks, such as money management or household chores.

For the study, researchers analyzed two waves of self-reported food and supplement consumption data from 11,811 adults, more than 4,200 of whom qualified as disabled. The team drew the data from the 2007-2008 and 2009-2010 National Health and Nutrition Examination Surveys, which are conducted by the National Center for Health Statistics.

"We found that American people consume much lower amounts of nutrients than are recommended," Ruopeng An, who led the study, said in a statement. "For example, only 11.3 percent of people meet the daily recommended intake of fiber. Only 4.7 percent of adults consume recommended amounts of potassium."

A large majority of adults also fall short of recommended intakes of vitamin A, vitamin C, vitamin D, calcium and iron, An said. They also eat more saturated fat, cholesterol and sodium than recommended, he said. The picture for those who are disabled is even bleaker. Disabled American adults were even less likely than those without a disability to meet recommended dietary levels of saturated fat, fiber, vitamin A, vitamin C, calcium and potassium, the researchers report. The only exceptions (for intake of vitamin A, vitamin C and fiber) were among people with the lowest level of disability, whose intakes were comparable to non-disabled adults.

"In general, people with disabilities are also disadvantaged nutritionally compared with people without disabilities, even though the bar is already so low," An said.

Those with the most severe physical and mental challenges were also the least likely to eat well. This makes sense if one considers the challenges they must overcome to obtain, prepare and eat a healthy diet, he said.

"Policymakers and activists for the disabled traditionally have focused primarily on improving transportation options and the physical accessibility of buildings, roads, paths and parking lots," An said. "Now it's time for them to turn their attention to the nutritional challenges that confront people with disabilities."

See Now: Covert Team Inside Newsweek Revealed as Key Players in False Human Trafficking Lawsuit