Why Some Foods Make It Easier to Overeat
Build Better Meals. Support Your Training.
You had something for breakfast, grabbed lunch between appointments and made it through a busy afternoon. By evening, you are hungry, tired and picking at whatever is easiest to reach.
Later, you tell yourself that tomorrow you will be more disciplined.
But before making another promise to “try harder,” it is worth looking at what your day—and your meals—actually provided.
Some foods are easy to eat quickly and deliver a lot of energy in a small amount. Other meals take longer to eat and offer a combination of nutrients and food volume that may leave you more satisfied. Sleep, meal timing, stress and access to food can complicate the picture further.
Understanding those influences gives you practical options. You can build a routine that supports your appetite and training without turning every meal into a test of willpower.
Why This Matters Beyond Weight Loss
At PuncHIIT Fitness, nutrition has a job to do: support the life you want to live and the training that helps you get there.
If your eating routine is difficult to sustain, simply cutting portions may leave you frustrated. We would first ask whether you have reliable meals, enough food around training and choices that suit your schedule.
Improving that routine may help you:
Feel more comfortable and satisfied between meals.
Arrive at training adequately fuelled.
Make fewer last-minute food decisions.
Build consistency without rigid food rules.
Pursue body-composition goals while still paying attention to strength and recovery.
These are coaching goals, not guaranteed outcomes from removing one food category.
What Are Ultra-Processed Foods?
Researchers commonly use the Nova system to classify foods by the nature and extent of processing. Ultra-processed foods are generally industrial formulations containing food-derived substances and ingredients or additives used to create particular flavours, textures or other product characteristics.
Examples can include soft drinks, confectionery, many packaged snack foods and some mass-produced breads and cereals. Classification depends on the product’s formulation; a package alone does not tell you which category it belongs to. Nature Medicine
This is different from saying that all processing is harmful. Freezing, canning and pasteurization can preserve food, retain nutrients and make the food supply safer and more convenient. Canada.ca
The useful question is how a food contributes to your overall eating pattern.
What the Original NIH Study Found
In 2019, researchers studied 20 adults living in a National Institutes of Health research facility. Each participant ate an ultra-processed diet for two weeks and an unprocessed diet for two weeks, in randomly assigned order. They could eat as much or as little as they wanted.
Participants consumed approximately 500 more calories per day on the ultra-processed diet. They gained about 0.9 kg during that phase and lost about 0.9 kg during the unprocessed phase.
The food offered was designed to match several nutritional characteristics, including calories, sugar, fat, sodium and fibre. That does not mean participants consumed identical amounts of those nutrients: they ate different quantities. pubmed.ncbi.nlm.nih.gov
This trial demonstrated an effect of the dietary patterns tested. It did not identify one additive responsible for overeating or establish that every ultra-processed product has the same effect.
The non-beverage foods also differed in energy density, among other characteristics. Processing could not be separated from every feature of the meals. pmc.ncbi.nlm.nih.gov
What Newer Research Adds
A 2025 Trial Tested Diets Following Healthy-Eating Guidelines
An eight-week crossover feeding trial recruited 55 adults with overweight or obesity who habitually consumed a high proportion of ultra-processed food. Both study diets followed the UK Eatwell Guide.
Average weight loss was approximately 2.1% on the minimally processed diet and 1.1% on the ultra-processed diet.
Both diets produced weight loss, with greater loss on the minimally processed pattern. That suggests food processing and related meal characteristics deserve attention alongside nutrient quality.
It remains a relatively small, short study. Food was supplied, most participants were women, and diet-order effects complicate interpretation. These findings are useful evidence, not a promise of a particular result for an individual. Nature Medicine
A 2026 Trial Examined Food Texture
A separate crossover trial involved 41 adults eating two ultra-processed diets for 14 days each. Foods were selected to produce either slower or faster eating through differences in texture.
Participants consumed about 369 fewer calories per day on the slower-eating diet. The diets were matched for several characteristics, including palatability and non-beverage energy density. There was no significant difference in body weight between diets over the study period.
This helps explain why the broad label “ultra-processed” is only part of the story. Food texture and the speed at which it allows us to eat can matter.
Choosing slower-to-eat foods in a study is also different from proving that a reminder to slow down produces the same effect. Wageningen University & Research
Five Useful Things to Look at in Your Meals
1. How Quickly Can You Eat the Food?
A soft snack or drink can be finished quickly. A meal with varied textures may take more time and attention.
The coaching application is to create a reasonable opportunity to notice your eating. Sit down when possible, serve food onto a plate and put the phone aside for part of the meal.
Pause occasionally. Are you still hungry? Are you enjoying the food? Would another serving make you comfortably satisfied?
There is no universal stopwatch rule or required number of chews. Softer foods may be necessary for people with dental or swallowing difficulties.
2. How Much Energy Fits Into a Small Serving?
Energy density means the calories in a given weight of food. It is one reason meals of similar size can deliver different amounts of energy.
Consider what happens when you add vegetables or fruit to a meal while keeping a useful protein source and enough carbohydrate for your needs. You are changing the meal’s composition rather than simply asking yourself to tolerate a smaller plate.
Energy-dense foods can still be useful. Nuts, seeds and oils do not need to disappear from your diet. Their portions and role matter.
3. Is There a Meaningful Protein Source?
Protein can influence appetite. A systematic review and meta-analysis found improvements in hunger and fullness in short-term protein interventions, although long-term effects were less clear. PubMed
As a practical meal-building habit, include a protein food such as eggs, fish, chicken, tofu, beans, lentils or yogurt.
The amount should suit the individual. Adding protein does not make the rest of the meal irrelevant, and supplements are not automatically required.
4. What Are Your Regular Drinks Contributing?
Drinks can add energy without producing the same response as solid food. In a small crossover study, participants compensated less for energy consumed as soda than for an equivalent amount from jelly beans.
That does not mean the body ignores liquid calories. Milk, soup, a protein shake and a soft drink have different nutritional roles.
Look first at frequency and purpose. Is a sweetened drink an occasional choice you enjoy, or something consumed several times a day without much thought?
Replacing one regular sugary drink with water can be a straightforward starting point.
5. What Happens Before You Get Hungry?
A meal plan is easier to follow when food is available at the point you need it.
As a coaching observation, many difficult evenings start earlier: a rushed breakfast, an inadequate lunch or no plan for food after training.
Ask what would make the next meal easier. An extra dinner portion for tomorrow’s lunch? A snack packed before leaving home? A few freezer staples?
The goal is to reduce the number of decisions you have to make when tired.
Sleep Belongs in the Conversation
Food choice is not the only influence on intake. In a randomized trial of 80 younger adults with overweight who habitually slept less than 6.5 hours, a two-week sleep-extension intervention reduced average energy intake compared with the control group. PMC
That does not establish a specific appetite benefit for every adult, or solve chronic insomnia. It does support looking at sleep alongside nutrition.
If your evenings involve both strong food cravings and persistent exhaustion, the response may need to include your sleep routine as well as your meals.
A Meal-Building Framework You Can Actually Use
Start with four questions:
Protein: What protein food is included?
Produce: Where are the vegetables or fruit?
Fuel: What carbohydrate source suits this meal and my activity?
Practicality: Can I prepare or obtain this reliably?
This is a coaching framework, not a prescribed diet or a requirement to make every plate identical.
Breakfast might be eggs, toast and fruit. Lunch might be a bean-and-rice bowl with vegetables. Dinner might be fish, potatoes and frozen vegetables.
A vegetarian version can use tofu, lentils or beans. A budget-conscious version can rely on oats, eggs, canned legumes and frozen produce. Convenience should help the plan work.
Make Changes That Fit Your Starting Point
If You Rarely Prepare Meals
Begin with assembly rather than elaborate cooking. Put together a sandwich, yogurt and fruit, or a bowl using microwaveable rice, canned beans and frozen vegetables.
If Your Meals Are Already Reasonably Balanced
Look at the details: rushed eating, drink choices, long gaps between meals or portions that do not match your needs.
If You Train in the Evening
Plan what you will eat before and afterward. A late class should not leave you arriving home hungry with no food available.
If Fat Loss Is a Goal
Improving food quality can help, but energy intake still matters. Review progress over time and adjust portions with support if needed. Consider strength, recovery and adherence alongside the scale.
If Appetite Is Low
Your goal may be to eat enough. A shake or an energy-dense snack can serve a useful purpose. Appetite-management advice needs to reflect the person, especially when illness, medication or older age affects intake.
A Two-Week Coaching Experiment
Choose one habit that addresses a real difficulty:
Bring a planned lunch on three workdays.
Include a protein food at breakfast.
Replace one regular sugary drink with water.
Eat one daily meal seated, with fewer distractions.
Keep a reliable post-training meal available.
Track the action itself, then note hunger, satisfaction, energy and training performance in a few words.
After two weeks, ask whether the habit was manageable and useful. If you were still hungry, review the quantity and composition of food. If preparation was too demanding, simplify it. If it helped, repeat it before adding another change.
This is purposeful, measurable progression applied to everyday habits.
Common Mistakes
Banning Every Packaged Food
A blanket ban can remove convenient foods that help you eat well. Compare the product’s nutritional contribution and practical role.
Judging Food by Unfamiliar Ingredient Names
An ingredient list can help identify processing, but unfamiliar terminology does not establish harm or explain overeating.
Building a Plan Around Avoidance
“Eat fewer snacks” is incomplete advice if there is no plan for satisfying meals. Decide what you will eat and how it will be available.
Expecting All Hunger to Disappear
Hunger is a normal signal. The aim is a workable routine, not permanent fullness or ignoring your body’s needs.
Adding Harder Workouts to Compensate
Training should develop capacity. Review eating habits on their own terms rather than turning an enjoyable meal into a reason for punishment.
Who Benefits Most?
This approach may be particularly useful for busy adults, people who rely heavily on snacks or takeaway meals, and anyone who wants nutrition habits that support consistent training.
For adults in their 40s, 50s and beyond, coaching should consider recovery, current appetite, food access and medical needs. A plan should help you remain well nourished and capable.
Repeated loss-of-control eating, significant distress or compensatory behaviours warrant help from an appropriately qualified healthcare professional. They require more than meal-preparation advice.
Key Takeaways
Controlled trials show that some ultra-processed dietary patterns can encourage higher intake.
Newer research points to food texture and eating speed as contributing factors.
Processing category does not tell you everything about a food.
Protein, produce, practical meal preparation and drink choices offer useful starting points.
Sleep and the structure of your day also deserve attention.
Progress should support nourishment, training and a sustainable routine.
Frequently Asked Questions
Do I Have to Eliminate Ultra-Processed Foods?
Start by improving your usual meals and reducing reliance on foods that contribute little to your needs. You can make meaningful changes without creating a total ban.
Can I Lose Weight While Eating Some Ultra-Processed Foods?
Yes. Both diets in the 2025 trial produced weight loss, although the minimally processed diet produced greater average loss. Your overall eating pattern and energy intake matter.
Are Protein Powders or Bars Automatically Poor Choices?
Assess their role. A convenient product may help you meet a nutrition need. Consider its composition, how often you use it and what it replaces.
Do I Need to Count Calories?
Counting is one possible tool, but it is not required to begin improving meal structure. If progress stalls, a qualified coach or dietitian can help assess which approach is appropriate.
Does Eating Slowly Guarantee Weight Loss?
No. Research on texture and intake is encouraging, but it does not establish a guaranteed result from slowing down at meals.
Can PuncHIIT Help?
Our nutrition coaching can help you develop practical habits around your preferences, schedule and training. When medical nutrition care is needed, work with the appropriate healthcare professional.
The PuncHIIT Perspective
We apply the same principles to nutrition habits that we bring to coaching movement: understand the starting point, choose an appropriate challenge and build progressively.
At PuncHIIT Fitness, Stephanie Lynch provides nutrition coaching alongside our broader coaching services. We can help you examine your routine, choose a realistic next step and review how it works in everyday life.
That might mean organizing food around your boxing classes, preparing lunch more consistently or adapting habits during a demanding stage of life. The plan should reflect your needs rather than a generic menu.
Our focus is long-term health, sustainable progress and individualization. Good coaching also recognizes when a question needs a registered dietitian or another healthcare professional.
STOP EXERCISING. START TRAINING.
Bring that same purpose to how you fuel yourself.
Ready to Start Training?
Want help making nutrition more practical and consistent?
Explore Nutrition AIP Coaching:
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Coach’s Corner
Before I tell someone to change their food, I want to understand their day. What happens between breakfast and dinner? When do they train? What is waiting at home when they finish?
You can have good intentions and still end up making difficult decisions at the worst possible time. If you arrive home tired and hungry, that is when having a simple meal ready becomes valuable.
My advice is to find one point in the day you can improve. Pack lunch. Prepare an extra portion at dinner. Have a breakfast you can put together in a few minutes. Choose something useful and practise it until it becomes familiar.
That is how we build skills in the gym. We give the person a task they can manage, coach the details and progress when they are ready.
Your eating routine deserves the same patience. Pay attention to whether the change helps you feel, recover and train better. Then build on what works.
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Related Reading
The Basics Arent Broken Strength Sleep Nutrition Recovery
Weight Loss Vs Fat Loss Why The Scale Doesn T Tell The Full Story
Stop Trying To Shrink Your Way Into The Body You Want
References
Hall KD, et al. (2019). Ultra-Processed Diets Cause Excess Calorie Intake and Weight Gain: An Inpatient Randomized Controlled Trial of Ad Libitum Food Intake. Cell Metabolism, 30(1), 67–77.e3.
Dicken SJ, et al. (2025). Ultraprocessed or minimally processed diets following healthy dietary guidelines on weight and cardiometabolic health: a randomized, crossover trial. Nature Medicine, 31, 3297–3308.
Forde CG, et al. (2026; online publication November 2025). Eating rate has sustained effects on energy intake from ultraprocessed diets: a 2-week ad libitum dietary randomized controlled crossover trial. American Journal of Clinical Nutrition, 123(4), 101122.
Systematic review and meta-analysis (2020). Effect of short- and long-term protein consumption on appetite and appetite-regulating gastrointestinal hormones. Physiology & Behavior, 226, 113123.
DiMeglio DP, Mattes RD. (2000). Liquid versus solid carbohydrate: effects on food intake and body weight. International Journal of Obesity, 24, 794–800.
Health Canada. Limit highly processed foods. Updated May 2026.
Tasali E, et al. (2022). Effect of Sleep Extension on Objectively Assessed Energy Intake Among Adults With Overweight in Real-life Settings: A Randomized Clinical Trial. JAMA Internal Medicine.
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