Nearly a quarter of the calories U.S. adults consume comes from snacks, according to a new study published in PLOS Global Public Health.
Americans consume an average of 400 to 500 calories in snacks every day, which generally are lacking in protein, vitamins and minerals, the study found.
That’s more than the average breakfast — which is 300 to 400 calories.
Snacks also comprise about one-third of daily added sugar consumed by most adults.
Researchers from The Ohio State University (OSU) analyzed data from the National Health and Nutrition Examination Survey, which gathered information about the eating habits of 23,708 adults over 30 years of age between 2005 and 2016, according to an OSU press release.
"With a usual focus on what people consume at meals, snacks are a ubiquitous and stealth contributor to overall intakes," senior study author Christopher Taylor, professor of medical dietetics in the School of Health and Rehabilitation Sciences at OSU, told Fox News Digital via email.
That is largely because snacks are more spontaneous, according to the researcher.
"Snack choices aren’t usually planned the same way we plan what we eat for meals," said Taylor.
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Overall, snacks made up 19.5% to 22.4% of adults’ total calorie consumption.
The most common snacks were convenience foods high in fats and carbohydrates — followed by sweets, alcoholic or sugary beverages, protein, milk and dairy, and fruits and grains. Vegetables were by far the smallest portion of snacks.
Fruits and vegetables only made up about 5% of the total snacking calories.
Based on their blood glucose levels, the respondents were categorized into four groups: non-diabetes, prediabetes, controlled diabetes and poorly controlled diabetes.
The adults with type 2 diabetes who were working to control the disease reported eating fewer sugary foods and snacking less overall compared to those who did not have diabetes or were prediabetic.
"Those with diabetes had lower proportional intakes in added sugars, which is a recurring theme in diabetes education," said Taylor.
The study did have some limitations.
"While the large number of individuals included provides a broader picture of dietary intakes, it does not reflect their usual intakes with this snapshot," Taylor told Fox News Digital.
"But for the day of intake reported, it allows us to review intakes for snacking occasions compared to what comes from reported meals."
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Tanya Freirich, a registered dietitian nutritionist in Charlotte, North Carolina, was not involved in the study but commented on the findings.
"While there is a huge sample size of people included in the study, it only used one day of diet recalls," she told Fox News Digital.
"Many people don't eat the same thing every day, so it would help to see more days of diet recall — but this is still a great starting point to think about how we eat."
While people often put more thought and planning into what they eat for meals, the study highlights that all food choices throughout the day add up to create a total picture.
"It's easy to treat a snack like it doesn't count, but it's important to treat it like a mini-meal," said Frierich.
When choosing a snack, the dietitian recommends people pick any combination of three macronutrients: healthy fats, carbohydrates and protein.
"Instead of just eating a piece of fruit, enjoy fruit and nuts — or instead of just chips, enjoy tortilla chips and guacamole as a snack," she suggested.
Another general rule of thumb when snacking is to aim for as many unprocessed components as possible, Frierich advised.
"For example, a fresh vegetable (sliced cucumbers, baby carrots) is much better than veggie chips."
"Choosing unprocessed foods (fresh fruits, vegetables, nuts, seeds, whole grain crackers or breads) in place of more processed foods (chips, cookies, candy, sodas) is a great way to increase the nutritional value of your meals and snacks," she added.
Portion size is also important when snacking.
"I recommend taking the food out of the container and serving yourself on a plate," said Frierich. "This is a great way to be mindful about your portion instead of just eating mindlessly."
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"Your snacks can be all the difference between feeling energetic and focused between meals or consuming empty calories that lead to a blood sugar rush and crash," she added.
Study author Taylor also stressed the importance of making "more insightful choices" at snack time.
Rather than focusing on "don’t eat this, eat that," he recommended focusing on a well-balanced day across all eating occasions.
Taylor added, "This gives latitude in making healthy choices and meeting your overall nutritional needs."
