Junk food statistics at a glance
Junk food statistics in the supplied dataset point to a simple pattern: highly processed food is a major part of the diet, fast food still supplies a meaningful share of calories, and sugary and salty foods remain stubbornly common across ages.
The numbers also show that the problem is not limited to one age group. Youth get a larger share of calories from ultra-processed foods than adults, but adults still rely heavily on fast food and other energy-dense items (CDC NCHS Data Brief No. 536, 2025; CDC NCHS Data Brief No. 533, 2025).
Fast facts
- 55.0% of total calories for U.S. people age 1 and older came from ultra-processed foods during August 2021-August 2023 (CDC NCHS Data Brief No. 536, 2025).
- 32.0% of U.S. adults age 20 and older consumed fast food on a given day (CDC NCHS Data Brief No. 533, 2025).
- U.S. consumers reported 2,093 calories per person per day in 2017-2018, up from 1,807 calories in 1977-1978 (USDA ERS Summary Findings, 2025).
- Americans consume more than 3,300 mg of sodium per day on average (CDC About Sodium and Health, 2026).
- In 2022, 1 in 8 people worldwide were living with obesity (WHO Obesity and overweight, 2025).
Contents
- What junk food statistics say about ultra-processed foods
- Fast food statistics by age, education, and weight
- What the biggest fast-food and junk-food categories are
- Sodium and sugar statistics that matter
- Long-run food environment trends
- Worldwide obesity context
What junk food statistics say about ultra-processed foods
A useful way to read junk food statistics is to separate the broad diet pattern from the specific food groups that drive it. The broad pattern is that ultra-processed foods make up a majority share of calories for the overall population, and an even larger share for youth.
Key number: 55.0% of calories from ultra-processed foods among U.S. people age 1 and older during August 2021-August 2023 (CDC NCHS Data Brief No. 536, 2025).
That overall figure rises for younger people:
- 61.9% for youth ages 1-18 (CDC NCHS Data Brief No. 536, 2025).
- 56.1% for children ages 1-5 (CDC NCHS Data Brief No. 536, 2025).
- 64.8% for youth ages 6-11 (CDC NCHS Data Brief No. 536, 2025).
- 63.0% for youth ages 12-18 (CDC NCHS Data Brief No. 536, 2025).
- 53.0% for adults age 19 and older (CDC NCHS Data Brief No. 536, 2025).
The age pattern is straightforward: youth consume a larger share of calories from ultra-processed foods than adults, and the 6-11 and 12-18 groups are especially high. That matters because the category is not a single food, but a broad grouping that includes many of the most familiar convenience foods in the diet.
Ultra-processed calories by age group
| Group | Share of calories from ultra-processed foods | Source |
|---|---|---|
| People age 1 and older | 55.0% | CDC NCHS Data Brief No. 536, 2025 |
| Youth ages 1-18 | 61.9% | CDC NCHS Data Brief No. 536, 2025 |
| Children ages 1-5 | 56.1% | CDC NCHS Data Brief No. 536, 2025 |
| Youth ages 6-11 | 64.8% | CDC NCHS Data Brief No. 536, 2025 |
| Youth ages 12-18 | 63.0% | CDC NCHS Data Brief No. 536, 2025 |
| Adults age 19 and older | 53.0% | CDC NCHS Data Brief No. 536, 2025 |
The dataset also shows a smaller but still noticeable spread by adult age:
- Adults ages 19-39: 54.4% (CDC NCHS Data Brief No. 536, 2025)
- Adults ages 40-59: 52.6% (CDC NCHS Data Brief No. 536, 2025)
- Adults age 60 and older: 51.7% (CDC NCHS Data Brief No. 536, 2025)
That means the share declines slightly with age, but stays above half of calories even for older adults.
Fast food statistics by age, education, and weight
Fast food statistics add another layer to the picture. Instead of asking how much of the diet is ultra-processed overall, they show how often fast food contributes to daily energy intake.
Big number: 32.0% of U.S. adults age 20 and older consumed fast food on a given day during August 2021-August 2023 (CDC NCHS Data Brief No. 533, 2025).
The same source shows that adults got 11.7% of daily calories from fast food on average (CDC NCHS Data Brief No. 533, 2025). The distribution is uneven, though, and the share varies sharply by age.
Daily fast food calories by adult age
| Group | Share of daily calories from fast food | Source |
|---|---|---|
| Adults age 20 and older | 11.7% | CDC NCHS Data Brief No. 533, 2025 |
| Adults ages 20-39 | 15.2% | CDC NCHS Data Brief No. 533, 2025 |
| Adults ages 40-59 | 11.9% | CDC NCHS Data Brief No. 533, 2025 |
| Adults age 60 and older | 7.6% | CDC NCHS Data Brief No. 533, 2025 |
The younger adult group stands out. Adults ages 20-39 consumed 15.2% of daily calories from fast food, nearly double the 7.6% among adults age 60 and older (CDC NCHS Data Brief No. 533, 2025).
The dataset also shows variation by education and weight status:
- Adults with some college education consumed 13.4% of daily calories from fast food (CDC NCHS Data Brief No. 533, 2025).
- Adults with a high school diploma or less consumed 11.2% (CDC NCHS Data Brief No. 533, 2025).
- Adults with a bachelor’s degree or more consumed 10.8% (CDC NCHS Data Brief No. 533, 2025).
- Adults with underweight or normal weight consumed 9.8% (CDC NCHS Data Brief No. 533, 2025).
- Adults with overweight consumed 10.8% (CDC NCHS Data Brief No. 533, 2025).
- Adults with obesity consumed 13.7% (CDC NCHS Data Brief No. 533, 2025).
Why it matters
The fast-food numbers are not just a frequency measure. They show how much of the calorie budget is being allocated to one food source. A daily share of 15.2% for ages 20-39 means fast food is not a rare indulgence for many adults in that age range; it is a recurring part of normal eating patterns (CDC NCHS Data Brief No. 533, 2025).
What the biggest fast-food and junk-food categories are
The dataset names the major category contributors to ultra-processed calories. These are the foods that keep appearing near the top of the list, which helps explain why the totals are so high.
For youth, the biggest contributors were:
- Sandwiches including burgers: 7.6% of total calories from ultra-processed foods (CDC NCHS Data Brief No. 536, 2025)
- Sweet bakery products: 6.3% (CDC NCHS Data Brief No. 536, 2025)
- Savory snacks: 4.9% (CDC NCHS Data Brief No. 536, 2025)
- Pizza: 4.7% (CDC NCHS Data Brief No. 536, 2025)
- Sweetened beverages: 3.9% (CDC NCHS Data Brief No. 536, 2025)
For adults, the leading contributors were similar but not identical:
- Sandwiches including burgers: 8.6% of total calories from ultra-processed foods (CDC NCHS Data Brief No. 536, 2025)
- Sweet bakery products: 5.2% (CDC NCHS Data Brief No. 536, 2025)
- Sweetened beverages: 4.4% (CDC NCHS Data Brief No. 536, 2025)
- Savory snacks: 3.4% (CDC NCHS Data Brief No. 536, 2025)
- Breads, rolls, and tortillas: 3.1% (CDC NCHS Data Brief No. 536, 2025)
The overlap matters. Sandwiches including burgers and sweet bakery products appear near the top for both youth and adults, which suggests that some of the biggest calorie sources are common across age groups rather than isolated to one demographic.
Compact comparison of leading categories
| Category | Youth share of ultra-processed calories | Adult share of ultra-processed calories | Source |
|---|---|---|---|
| Sandwiches including burgers | 7.6% | 8.6% | CDC NCHS Data Brief No. 536, 2025 |
| Sweet bakery products | 6.3% | 5.2% | CDC NCHS Data Brief No. 536, 2025 |
| Savory snacks | 4.9% | 3.4% | CDC NCHS Data Brief No. 536, 2025 |
| Pizza | 4.7% | not listed in adult top five | CDC NCHS Data Brief No. 536, 2025 |
| Sweetened beverages | 3.9% | 4.4% | CDC NCHS Data Brief No. 536, 2025 |
| Breads, rolls, and tortillas | not listed in youth top five | 3.1% | CDC NCHS Data Brief No. 536, 2025 |
A table like this makes the underlying pattern easier to see: the biggest categories are not obscure snacks, but everyday foods and beverages that are easy to consume frequently.
Sodium and sugar statistics that matter
Junk food statistics are not only about calories. They also connect to sodium and added sugar, two of the most important components to track when looking at diet quality.
Sodium
The CDC says Americans consume more than 3,300 mg of sodium per day on average (CDC About Sodium and Health, 2026).
That is well above the federal recommendation of less than 2,300 mg per day for teens and adults (CDC About Sodium and Health, 2026). The same source also notes that sodium chloride is 40% sodium and 60% chloride, and that one teaspoon of table salt contains about 2,400 mg of sodium (CDC About Sodium and Health, 2026).
These details help explain why sodium can climb so quickly in a diet that leans on fast food, restaurant food, and packaged convenience items.
Added sugars
The sugar data show a parallel pattern, especially for children and teens.
- In 2021-2023, 55.9% of children ages 1-5 consumed at least one sugar-sweetened beverage in the past 7 days (CDC Get the Facts: Added Sugars, 2026).
- In 2017-2018, children and young adults ages 2-19 consumed 17 teaspoons of added sugars per day on average (CDC Get the Facts: Added Sugars, 2026).
- Boys ages 2-19 consumed 18 teaspoons per day (CDC Get the Facts: Added Sugars, 2026).
- Girls ages 2-19 consumed 15 teaspoons per day (CDC Get the Facts: Added Sugars, 2026).
- Adults age 20 and older consumed 17 teaspoons per day on average in 2017-2018 (CDC Get the Facts: Added Sugars, 2026).
- Men age 20 and older consumed 19 teaspoons per day (CDC Get the Facts: Added Sugars, 2026).
- Women age 20 and older consumed 15 teaspoons per day (CDC Get the Facts: Added Sugars, 2026).
The dataset also shows major differences by race and ethnicity within age groups. For example:
- Children ages 2-5 who were non-Hispanic Black consumed 13 teaspoons per day, versus 7 teaspoons for non-Hispanic Asian children (CDC Get the Facts: Added Sugars, 2026).
- Children ages 6-11 who were non-Hispanic Black consumed 19 teaspoons per day, versus 12 teaspoons for non-Hispanic Asian children (CDC Get the Facts: Added Sugars, 2026).
- Young people ages 12-19 who were non-Hispanic Black consumed 20 teaspoons per day, versus 14 teaspoons for non-Hispanic Asian young people (CDC Get the Facts: Added Sugars, 2026).
- Non-Hispanic Black adults consumed 19 teaspoons per day, versus 10 teaspoons for non-Hispanic Asian adults (CDC Get the Facts: Added Sugars, 2026).
Long-run food environment trends
The longer time series in the dataset show that junk food statistics did not appear overnight. The food environment has shifted over decades, and the trend lines are still visible.
A simple before-and-after view
| Measure | Earlier value | Later value | Source |
|---|---|---|---|
| Share of U.S. food energy from fast food | 5.9% in 1977 | 16.3% in 2017-2018 | USDA ERS Dietary Quality by Food Source and Demographics in the United States, 1977-2018 |
| Share of U.S. food energy from restaurant food | 3.3% in 1977 | 7.8% in 2017-2018 | USDA ERS Dietary Quality by Food Source and Demographics in the United States, 1977-2018 |
| Reported calorie intake per person per day | 1,807 in 1977-1978 | 2,093 in 2017-2018 | USDA ERS Summary Findings, 2025 |
The same USDA material says food away from home has exceeded 30% of total food energy intake since 2011 (USDA ERS Dietary Quality by Food Source and Demographics in the United States, 1977-2018).
That long-run shift helps frame the rest of the data. If more calories are coming from fast food and restaurant food, then it is not surprising that sodium, added sugar, and ultra-processed calories remain so prominent.
Quality differences in the food supply
The USDA summary findings add a few more important comparisons:
- Since USDA updated school meal nutrition standards in 2012-2013, school foods became twice as dense in whole grains as food at home (USDA ERS Summary Findings, 2025).
- Since those standards were updated, school foods became seven times denser in whole grains than fast food and restaurant foods (USDA ERS Summary Findings, 2025).
- In 2017-2018, U.S. consumers’ diets fell short of 16 of 23 density measures by more than 20% (USDA ERS Summary Findings, 2025).
- In 2017-2018, fast food and restaurant foods were higher in saturated fats, sodium, and refined grains than food at home (USDA ERS Summary Findings, 2025).
- In 2017-2018, restaurant foods were lower in added sugars than food at home (USDA ERS Summary Findings, 2025).
Those findings are useful because they show that junk food statistics are not only about quantity. They also reflect how food sources differ in nutrient density.
Worldwide obesity context
The global obesity statistics in the dataset show that the issue is not restricted to the United States.
In 2022:
- 1 in 8 people worldwide were living with obesity (WHO Obesity and overweight, 2025).
- 2.5 billion adults age 18 and older were overweight worldwide (WHO Obesity and overweight, 2025).
- Of those adults, 890 million were living with obesity (WHO Obesity and overweight, 2025).
- 43% of adults worldwide were overweight (WHO Obesity and overweight, 2025).
- 16% of adults worldwide were living with obesity (WHO Obesity and overweight, 2025).
- More than 390 million children and adolescents ages 5-19 were overweight worldwide (WHO Obesity and overweight, 2025).
- Of those 5-19 year olds, 160 million were living with obesity (WHO Obesity and overweight, 2025).
The longer-term trend is just as striking:
- Worldwide adult obesity has more than doubled since 1990 (WHO Obesity and overweight, 2025).
- Adolescent obesity has quadrupled since 1990 (WHO Obesity and overweight, 2025).
There are also regional differences in the dataset:
- Adult overweight prevalence was 67% in the WHO Region of the Americas in 2022 (WHO Obesity and overweight, 2025).
- Adult overweight prevalence was 31% in both the WHO South-East Asia Region and the African Region in 2022 (WHO Obesity and overweight, 2025).
- In Africa, overweight children under 5 increased by nearly 12.1% since 2000 (WHO Obesity and overweight, 2025).
- Almost half of overweight or obese children under 5 in 2024 lived in Asia (WHO Obesity and overweight, 2025).
What the numbers suggest about junk food habits
The strongest pattern across the dataset is consistency. Ultra-processed foods account for more than half of calories overall, fast food remains a sizable source of daily calories, and the biggest category contributors are everyday items like sandwiches, sweet bakery products, savory snacks, pizza, and sweetened beverages (CDC NCHS Data Brief No. 536, 2025; CDC NCHS Data Brief No. 533, 2025).
A few takeaways stand out:
- Youth have the highest ultra-processed calorie shares, especially ages 6-11 and 12-18 (CDC NCHS Data Brief No. 536, 2025).
- Adults ages 20-39 are the heaviest fast-food consumers in the dataset (CDC NCHS Data Brief No. 533, 2025).
- Sodium intake remains above the federal recommendation by a wide margin (CDC About Sodium and Health, 2026).
- Added sugars are still high across both youth and adults, with especially large differences across demographic groups (CDC Get the Facts: Added Sugars, 2026).
- Long-run USDA data show that fast food and restaurant food now play a much larger role in the U.S. diet than they did in the late 1970s (USDA ERS Dietary Quality by Food Source and Demographics in the United States, 1977-2018).
The overall picture is less about one single bad food and more about a food environment where calorie-dense, highly processed, salty, and sweet items remain easy to reach and hard to avoid.