Whole grain consumption statistics show a persistent gap between dietary guidance and reported intake. U.S. studies measure that gap in servings, ounce-equivalents, grams, and shares of total grain intake, while global research models the health burden associated with insufficient whole-grain consumption.
Key Whole Grain Consumption Statistics
The most broadly useful figures span intake, participation, food sources, and modeled outcomes:
- U.S. adults averaged 1.0 whole-grain serving out of 6.7 daily grain servings in 1994–1996, based on a survey of adults aged 20 and over.
- Only 8% of U.S. adults met the recommendation of at least three whole-grain servings daily in 1994–1996, according to a dietary survey estimate.
- Only 2% of the U.S. population met whole-grain recommendations on the 2015–2020 evidence base, according to a comparative-risk model estimate.
- U.S. adults reported a mean of 0.9 ounce-equivalents of whole grains per day on the 2015–2020 evidence base, in a modeled estimate for adults aged 20 and over.
- The Healthy U.S.-Style eating pattern recommends 6 ounce-equivalents of grains daily, with half from whole grains, at 2,000 calories in 2015–2020, as a guideline rather than an intake measure.
- Mean whole-grain consumption among U.S. adults rose from 0.56 to 1.00 servings per day between 1999–2000 and 2011–2012, based on dietary survey estimates.
- The share of U.S. adults eating at least one whole-grain serving daily increased from 12.5% to 31.6% between 1999–2000 and 2011–2012, based on survey estimates.
- AHA-defined whole-grain intake among U.S. adults aged 20 and over increased from 0.65 to 1.05 ounce-equivalents per day between 2003–2004 and 2017–2018, based on NHANES survey estimates.
- DGA-defined whole-grain intake among U.S. adults aged 20 and over rose from 0.50 to 0.81 ounce-equivalents per day between 2003–2004 and 2017–2018, using a different definition.
- Whole grains accounted for 15.8% of total grain intake among U.S. adults aged 20 and over in 2013–2016, based on a CDC survey report.
- Whole grains accounted for 19.7% of total grain intake among U.S. adults aged 60 and over in 2013–2016, compared with 12.9% among adults aged 20–39.
- Only 2.9% of U.S. children and adolescents aged 2–18 consumed at least 3 whole-grain ounce-equivalents per day in 2009–2010, according to a dietary survey.
- Only 7.7% of U.S. adults aged 19 and over consumed at least 3 whole-grain ounce-equivalents per day in 2009–2010, according to the same survey period.
- All grain foods averaged 126.3 grams per day among U.S. adults aged 19 and over in 2009–2012, including refined, enriched, and fortified products.
- Grain foods supplied 22.8% of dietary fiber, or 3.9 grams per day, among U.S. adults aged 19 and over in 2009–2012, describing all grain foods rather than only whole grains.
- Suboptimal intake of 11 dietary factors was associated with an estimated 14.1 million incident type 2 diabetes cases across 184 countries in 2018, in a comparative-risk model.
- Insufficient whole-grain intake accounted for an estimated 26.1% of diet-attributable type 2 diabetes burden across 184 countries in 2018, according to the same model.
Contents
- Current U.S. whole grain intake and recommendation gaps
- Whole grain consumption trends
- Whole grain data by age, sex, and race
- Whole grain foods and dietary sources
- Whole grain consumption among children and adults
- Whole grain intake, nutrients, and global health outcomes
Current U.S. Whole Grain Intake and Recommendation Gaps
The earliest supplied benchmark, from 1994–1996, found that U.S. adults aged 20 and over consumed 1.0 whole-grain serving per day out of 6.7 total daily grain servings. Only 8% met the recommendation of at least three whole-grain servings daily; both figures are dietary recall estimates, so short observation windows limit interpretation of usual intake. Dietary intake of whole grains
More recent estimates still indicate a large gap, although the measurement framework differs. A comparative-risk model using a 2015–2020 evidence base estimated that only 2% of the U.S. population met whole-grain recommendations and that U.S. adults aged 20 and over reported a mean of 0.9 ounce-equivalents per day; uncertainty intervals and model assumptions apply. Incident type 2 diabetes attributable to suboptimal diet in 184 countries
| Measure | Value and period | Population or pattern |
|---|---|---|
| Whole-grain intake | 1.0 serving/day, 1994–1996 | U.S. adults aged 20+ |
| Adults meeting three-serving recommendation | 8%, 1994–1996 | U.S. adults aged 20+ |
| Modeled population meeting recommendations | 2%, 2015–2020 evidence base | U.S. population |
| Modeled mean intake | 0.9 oz eq/day, 2015–2020 evidence base | U.S. adults aged 20+ |
The Healthy U.S.-Style pattern for 2015–2020 recommends 6 ounce-equivalents of grains daily at 2,000 calories, with half of those grains from whole grains. The Healthy Vegetarian pattern recommends 6.5 ounce-equivalents of grains, including 3.5 ounce-equivalents of whole grains; these are guideline figures, not direct measures of individual intake. Grain Foods Are Contributors of Nutrient Density for American Adults and Help Close Nutrient Recommendation Gaps
Whole Grain Consumption Trends in U.S. Adults
Survey estimates indicate that intake increased over several periods, but the size of the increase depends on the definition used. Mean whole-grain consumption rose from 0.56 to 1.00 servings per day between 1999–2000 and 2011–2012, while the share of adults eating at least one serving daily rose from 12.5% to 31.6%.
Refined-grain consumption declined from 5.49 to 5.32 servings per day over the same period. Whole-grain food intake among US adults, based on different definitions of whole-grain foods, NHANES 2003–2018
The same research reports a 77.0% increase in whole-grain consumption from 1999–2000 to 2011–2012 and different ounce-equivalent trends from 2003–2004 to 2017–2018:
| Definition | Start | End | Population and period |
|---|---|---|---|
| AHA | 0.65 oz eq/day | 1.05 oz eq/day | U.S. adults aged 20+, 2003–2004 to 2017–2018 |
| DGA | 0.50 oz eq/day | 0.81 oz eq/day | U.S. adults aged 20+, 2003–2004 to 2017–2018 |
| AACCI | 0.52 oz eq/day | 0.73 oz eq/day | U.S. adults aged 20+, 2003–2004 to 2017–2018 |
| FDA | 0.39 oz eq/day | 0.53 oz eq/day | U.S. adults aged 20+, 2003–2004 to 2017–2018 |
The reported AHA-defined increase was 61.5%. These estimates should not be treated as interchangeable because each definition identifies whole-grain foods differently, and the underlying NHANES figures rely mainly on 24-hour dietary recalls.
Whole Grain Data by Age, Sex, and Race
CDC data for 2013–2016 show that whole grains supplied 15.8% of total grain intake among U.S. adults aged 20 and over. The share was lower among adults aged 20–39 and higher among adults aged 60 and over.
| Group | Whole grains as share of total grains, 2013–2016 |
|---|---|
| Adults aged 20+ | 15.8% |
| Adults aged 20–39 | 12.9% |
| Adults aged 60+ | 19.7% |
| Men aged 20+ | 14.8% |
| Women aged 20+ | 16.7% |
The same CDC report found shares of 11.1% among Hispanic adults, 16.5% among non-Hispanic White adults, 13.7% among non-Hispanic Black adults, and 18.3% among non-Hispanic Asian adults. These are percentages of total grain intake for the specified groups, not percentages meeting a recommended daily amount. Contribution of whole grains to total grains intake among adults aged 20 and over: United States, 2013–2016
Whole Grain Foods and Dietary Sources
Food-category data help show where grain consumption occurs, although not every grain food in these figures is whole grain. Among U.S. adults aged 19 and over in 2009–2012, all grain foods averaged 126.3 grams per day and represented 4.1% of total diet weight.
| Grain-food category | Mean amount, 2009–2012 |
|---|---|
| All grain foods | 126.3 g/day |
| Breads, rolls, and tortillas | 55.7 g/day |
| Sweet bakery products | 36.0 g/day |
| Cooked grains | 24.6 g/day |
| Ready-to-eat cereals | 12.2 g/day |
In 2017–2018, DGA-defined whole-grain foods supplied 0.31 ounce-equivalents per day through breads, rolls, and tortillas, 0.14 through ready-to-eat cereals, and 0.12 through savory snacks and crackers among U.S. adults aged 20 and over. The 2017–2018 source reports that DGA-defined foods supplied 13.7% of grain-food intake, compared with 16.7% for AHA-defined foods, 16.0% for Whole Grain Council-defined foods, and 9.18% for FDA-defined foods. Whole-grain food intake among US adults, based on different definitions of whole-grain foods, NHANES 2003–2018
Whole Grain Consumption Among Children and Adults
The participation gap appears in both age groups. In 2009–2010, only 2.9% of U.S. children and adolescents aged 2–18 consumed at least 3 whole-grain ounce-equivalents per day, compared with 7.7% of U.S. adults aged 19 and over. Total dietary fiber intakes in the US population are related to whole grain consumption: results from NHANES 2009 to 2010
The adult threshold result is not the same measure as the CDC share-of-total-grains figures. One expresses the percentage reaching a daily threshold, while the other describes the proportion of total grain intake represented by whole grains.
Whole Grain Intake, Nutrients, and Global Health Outcomes
All grain foods supplied 285 calories per day, or 14.0% of total calories, among U.S. adults aged 19 and over in 2009–2012. They also supplied 22.8% of dietary fiber, equal to 3.9 grams per day; 33.6% of folate, equal to 219 micrograms DFE per day; 29.7% of iron, equal to 5.3 milligrams per day; and 13.9% of magnesium, equal to 43.7 milligrams per day.
These nutrient-source figures include refined, enriched, and fortified grain products unless explicitly labeled otherwise. Grain Foods Are Contributors of Nutrient Density for American Adults and Help Close Nutrient Recommendation Gaps
Global diabetes estimates describe modeled attributable burden rather than individually observed causal cases. For 2018, a comparative-risk analysis across 184 countries estimated that suboptimal intake of 11 dietary factors was attributable to 14.1 million incident type 2 diabetes cases among adults, representing 70.3% of global new cases.
| Modeled measure | Estimate and period | Scope |
|---|---|---|
| Diet-attributable incident type 2 diabetes | 14.1 million cases, 2018 | 184 countries, adults |
| Share of global new cases attributable to diet | 70.3%, 2018 | 184 countries, adults |
| Burden attributable to insufficient whole-grain intake | 26.1%, 2018 | Diet-attributable burden, 184 countries |
| Burden attributable to excess refined rice and wheat | 24.6%, 2018 | Diet-attributable burden, 184 countries |
The modeled diet-attributable share of incident type 2 diabetes was highest at 85.6% in Central and Eastern Europe and Central Asia and lowest at 55.4% in South Asia. Globally, the diet-attributable share increased by 2.6 percentage points, corresponding to 8.6 million cases, from 1990 to 2018. Incident type 2 diabetes attributable to suboptimal diet in 184 countries