Key Takeaways
- 35% of Americans surveyed rate their nutrition knowledge as above average, up from 24% in 2025—a 46% increase in perceived expertise in one year
- Only 16% can correctly identify recommended daily fluid intake; 58% default to the oversimplified “8 cups per day” rule
- Half of Americans surveyed who claim to know what complex carbohydrates are can accurately define them—up from 43% in 2022, showing real progress
- While awareness is improving, some foundational areas still need attention
Americans are more confident about nutrition than ever before, and in many ways, that confidence is well-earned. People are engaging with nutrition information more actively, asking better questions, and recognizing the value of tracking what they eat.
But confidence and complete accuracy don’t always develop at the same pace. And understanding where the gaps remain can help anyone working toward health goals get better results.
The Confidence Shift
According to a survey conducted by MyFitnessPal, between 2025 and 2026, the percentage of Americans surveyed who rate their nutrition knowledge as above average jumped from 24% to 35%. That’s a nearly 50% increase in self-assessed expertise in just 12 months.
This shift coincides with broader changes in how people engage with nutrition information. The percentage of people surveyed who report having no idea what they consume daily has dropped from 91% in 2022 to 85% in 2026. These trends suggest genuine progress in awareness. But awareness and accuracy aren’t the same thing.
Where Some Gaps Remain
Despite rising confidence, a few foundational areas show room for improvement.
- Micronutrients: Recognition has improved—over half of respondents can now identify potassium (55%), vitamin A (55%), vitamin D (54%), and zinc (53%) as micronutrients. However, 34% still incorrectly identify protein as a micronutrient rather than a macronutrient.
- Hydration: Only 16% of people surveyed can correctly identify the general guideline for daily fluid intake—half your body weight in ounces. This isn’t surprising, since the oversimplified “8 cups per day” rule has been widely circulated for decades. The majority (58%) still rely on this shortcut, which doesn’t account for body size, activity level, or climate. Another 15% believe the guideline is one gallon per day.
- Macronutrient identification: While 58% of respondents can correctly identify protein as a macronutrient and 56% can identify carbohydrates, application of that knowledge varies. When asked to estimate macronutrient content in real foods, accuracy drops significantly—particularly for foods perceived as healthy.
- Complex carbohydrates: About half of Americans surveyed have heard of complex carbohydrates. Among those who claim to know of complex carbohydrates, 50% can accurately define them as carbohydrates high in fiber that digest slowly. This represents improvement from 43% in 2022, but still means half of those who have heard of the term don’t actually understand it.
The Knowledge-Application Gap
Understanding terminology is one thing. Applying that understanding to real decisions is another.
About two-thirds of people surveyed (64%) can correctly identify that calories measure the energy your body gets from food and beverages. But when asked to estimate calories in specific foods, accuracy varies dramatically based on whether the food carries a “health halo.” People are reasonably accurate with cheeseburgers but significantly underestimate calories in items like fish tacos or Caesar salads.
Similarly, 60% of respondents understand that serving size refers to the standardized amount on nutrition labels. Yet only 25% correctly understand portion size as the amount chosen in one sitting. This disconnect makes accurate intake tracking difficult even for people who read labels carefully.
Why Closing These Gaps Matters
These knowledge gaps aren’t about intelligence or effort—they’re about having access to accurate, personalized information.
If you’re following a hydration guideline that doesn’t account for your body size or activity level, you might be drinking too much or too little without realizing it. If you’re unclear on the difference between complex and simple carbs, it’s harder to use that concept effectively in meal planning. If your estimates for certain foods are consistently off by 20-50%, it can be frustrating when results don’t match expectations.
The good news is that these aren’t permanent gaps. They’re areas where the right information and tools can make a real difference.
The Path Forward
93% of Americans surveyed now agree that being able to accurately log food would help them monitor intake, up from 87% in prior years. This suggests openness to tools that help close the gap between confidence and accuracy.
When people track consistently, they may build clarity. Initial estimates may be off, but over time, the act of comparing estimates to actual values can help teach pattern recognition. Confidence becomes backed by real information rather than assumptions.
Nearly one million people reach their goals with MyFitnessPal each year because it helps them be more precise, converting assumptions into data points and guesswork into information.
The Takeaway
Rising nutrition confidence is genuinely encouraging. It shows that people are engaging with health information more actively and taking their nutrition goals seriously.
The areas where understanding is still developing aren’t flaws—they’re opportunities. With the right tools and information, these gaps may close over time. What matters is continuing to build on the progress that’s already happening.
The solution isn’t about perfection. It’s about pairing confidence with the tools and habits that make it effective—verifying assumptions when it matters, tracking consistently, and treating nutrition literacy as something that develops gradually rather than something you either have or don’t.
Progress is real, and with continued attention to both confidence and accuracy, that progress will keep building.
Methodology: MyFitnessPal surveyed 1,000 U.S. adults aged 18-64 in January 2026. The sample was representative of the U.S. Census by age and gender.