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Most Americans are not getting enough fiber in our diets

Just 7% of adults meet fiber recommendations, raising risk of chronic diseases

Most Americans are not getting enough fiber in our diets
2021-06-07
(Press-News.org) Rockville, Maryland (June 7, 2021) -- Only 5% of men and 9% of women are getting the recommended daily amount of dietary fiber, according to a study being presented at NUTRITION 2021 LIVE ONLINE. Insufficient fiber intake is associated with a higher risk of heart disease and diabetes, two of the most common diseases in the U.S.

"These findings should remind people to choose fiber-rich foods like whole grains, fruits and vegetables to reduce their risk for heart disease," said Derek Miketinas, PhD, RD, an assistant professor at Texas Woman's University, the study's lead author. "Based on our findings, fewer than 1 in 10 U.S. adults meet their daily recommendations for fiber intake. For those with diabetes, it is especially important to eat enough fiber since they are at a greater risk for heart disease."

Fiber is a type of carbohydrate that passes through the body undigested. Though perhaps best known for its role in supporting regular bowel movements, fiber also carries important benefits for cardiovascular health. Studies suggest dietary fiber can help lower cholesterol, blood pressure and inflammation and help prevent diabetes. It can also improve blood sugar levels for people with diabetes.

The researchers analyzed data from more than 14,600 U.S. adults who participated in the National Health and Nutrition Examination Survey (NHANES) between 2013-2018. Fiber intake was assessed using dietary questionnaires; diabetes status was self-reported and also assessed with hemoglobin A1c (HbA1c) levels. Researchers only analyzed fiber intake from dietary sources, excluding fiber supplements.

"Unlike other similar studies, our analysis estimated Americans' usual fiber intake using advanced statistical methods instead of calculating a simple average," said Miketinas. "This approach is a better indicator of what a person typically eats because it can account for other factors that may influence fiber intake."

Health guidelines recommend eating 14 grams of fiber for every 1,000 calories consumed (g/1,000 kcal) daily. On average, women in the study consumed 9.9 g/1,000 kcal and men consumed 8.7 g/1,000 kcal. Among those with diabetes, women consumed 10.3 g/1,000 kcal and men consumed 9.6 g/1,000 kcal, higher than average but still falling short of recommendations.

To get the right amount of fiber, the typical woman should aim for about 25 grams (for a 2,000 calorie diet), while men should aim for 38 grams (for a 2,500 calorie diet), with lower targets for those over age 50. This typically requires a good mix of fruits, vegetables and whole grains. For perspective, choosing a whole grain such as pearled barley will provide 6 grams of fiber per cup compared to less than 2 grams of fiber in white rice.

In addition to shedding light on Americans' eating habits, Miketinas said the new findings can help inform future research into chronic disease prevention.

"The results of this study can be used to identify relationships between dietary fiber intake and outcomes of interest like risk factors for heart disease," said Miketinas. "In fact, our preliminary analysis suggests that higher dietary fiber intake in adults with diabetes is strongly associated with reductions in markers for heart and kidney disease."

Miketinas will present this research in an on-demand poster session during NUTRITION 2021 LIVE ONLINE from noon on Monday, June 7 through 5:30 p.m. on Friday, June 10 (abstract; presentation details).

Images available.

Please note that abstracts presented at NUTRITION 2021 LIVE ONLINE were evaluated and selected by a committee of experts but have not generally undergone the same peer review process required for publication in a scientific journal. As such, the findings presented should be considered preliminary until a peer-reviewed publication is available.

INFORMATION:

About NUTRITION 2021 LIVE ONLINE NUTRITION 2021 LIVE ONLINE, held June 7-10, 2021 is a dynamic virtual event showcasing new research findings and timely discussions on food and nutrition. Scientific symposia explore hot topics including clinical and translational nutrition, food science and systems, global and public health, population science and cellular and physiological nutrition and metabolism. https://meeting.nutrition.org #NutritionLiveOnline

About the American Society for Nutrition (ASN) ASN is the preeminent professional organization for nutrition research scientists and clinicians around the world. Founded in 1928, the society brings together the top nutrition researchers, medical practitioners, policy makers and industry leaders to advance our knowledge and application of nutrition. ASN publishes four peer-reviewed journals and provides education and professional development opportunities to advance nutrition research, practice and education. http://www.nutrition.org

Find more news briefs and tipsheets at: https://www.eurekalert.org/meetings/nutrition/2021/newsroom. Watch on-demand sessions, view posters and more by registering for a END


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Most Americans are not getting enough fiber in our diets

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[Press-News.org] Most Americans are not getting enough fiber in our diets
Just 7% of adults meet fiber recommendations, raising risk of chronic diseases