Quick brown rice is one of the most popular cereals, but a new study shows that it can be a problem for some Americans who consume it.
The new findings, published online in the journal JAMA Internal Medicine, show that more than one-third of Americans who consumed light brown and light white rice in 2015-16, who were also overweight or obese, had an intolerance to it.
The researchers say that could mean that the cereal has become an especially common source of intolerance among those with obesity and diabetes, and that this may explain why they have become more prone to developing an intolerance.
“These results suggest that the use of light brown or light white in foods has become a more frequent source of food intolerance among overweight/obese adults with diabetes and overweight/overweight adults with obesity, and suggest that a combination of factors may contribute to this condition,” lead study author David W. Smith, a gastroenterologist at the Mayo Clinic in Rochester, Minn., and colleagues wrote.
“We suspect that there may be an underlying genetic predisposition for the development of food-induced insulin resistance and that the food-based products used as foodstuffs could be contributing factors,” the researchers wrote.
The study was funded by the U.S. Department of Agriculture’s National Institutes of Health, the American Heart Association and the U, S. Department Of Agriculture.
The findings come at a time when some Americans are eating less refined, refined-grain foods, according to the U., S. and USDA.
But the increased availability of the more accessible sugars from grain and other foods may be contributing to a rise in the rate of obesity and other health problems among Americans.
The survey included about 1,600 participants from two major metropolitan areas, Boston and Philadelphia, who completed questionnaires about their food preferences, eating habits and their health conditions.
They were asked whether they ate light or dark brown rice or other white rice or both.
For the study, Smith and colleagues compared responses of 7,000 adults who were obese and 6,000 normal weight adults with an insulin resistance index (IRI) of 5,000.
They also compared responses for 7,500 normal weight people with an IRI of 6,500, overweight and obese people with IRIs of 5 and 6.
For the participants with a history of insulin resistance, the participants were also asked about the number of times they had eaten or had eaten light brown, light white, brown, or no rice in the past 12 months.
They then were asked about their current food consumption habits, their diet history and their risk of developing diabetes.
The participants were then asked to report their insulin resistance symptoms in terms of a single variable, including symptoms of type 2 diabetes, type 1 diabetes, or metabolic syndrome.
The researchers found that those who reported eating light brown were more likely to have an IRIs above 5, and those who ate light white were more than twice as likely to score an IRIS above 6.
These findings were confirmed when they compared the IRIs for these groups with the responses of adults who had an IR of 5 or above, and compared these two groups with those who had a score of 3 or below.
People with an iron deficiency or an iron-deficiency anemia also were more prone than those without the condition to have a score higher than 5.
They had a higher IRI score than people with a score lower than 3.
For this group, the risk of having an IR above 6 was about three times that of people with no IRIs.
“For adults with type 2 and type 1, these results suggest a potential interaction between food-related food intolerance and obesity and the risk for developing diabetes,” the authors wrote.