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A diet often begins with good intentions. Smaller portions, fewer treats, perhaps a list of foods to avoid. But what happens when hunger becomes harder to ignore, favourite foods seem more tempting, and thinking about what we can or cannot eat starts taking up more of our day?
Why can trying to eat less sometimes make us want to eat more?
Part of the answer lies in how our bodies respond to restriction. But hunger isn't the whole story. Our appetite, food environment, habits and emotions all influence when and how much we eat.
Understanding these influences can help us approach fat loss with greater awareness, while looking after our health and continuing to enjoy food.
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One thing worth knowing: Fat loss requires an energy deficit, but severe restriction and rigid food rules can make it harder to sustain. Eating well means nourishing the body while managing energy intake in a way that works in everyday life.
One thing to ponder: Which foods leave you comfortably satisfied, and which are easy to keep eating when they're within reach?
One thing to experiment with: Set aside around 20 minutes for a main meal, if you can. Slow down and enjoy your food without distractions. Notice the flavours, textures and how satisfying the experience can be.
Why eating less can make us more hungry
Our bodies respond when we reduce energy intake, particularly as we lose weight.
In a 2011 study, researchers followed people who had lost substantial weight through a very-low-energy diet. They found changes in several appetite-regulating hormones, alongside increased hunger, that were still evident a year later. [1]
This helps explain why maintaining weight loss can become more challenging over time. As weight decreases, appetite may rise, making it harder to maintain the eating patterns that produced the loss.
The response varies between individuals, and weight regain isn't inevitable. But continually tightening restrictions in response to increasing hunger may make matters worse.
There's a psychological dimension too. Rigid food rules can turn ordinary eating decisions into negotiations. A biscuit becomes forbidden. Having one can trigger the thought that the diet has already been ruined, followed by eating more than intended and promising to start again tomorrow.
Not everyone who follows a diet experiences this. Restriction can increase preoccupation with food, particularly when it involves persistent hunger or rigid rules. It can also contribute to overeating in some circumstances. But these effects are not inevitable, and the way we approach dietary restraint matters. [2-4]
The question is whether the plan helps someone eat well and work towards their goals, or demands more restraint than they can reasonably sustain.
For a broader look at the challenges of managing weight in midlife, see Why fat loss feels harder after 40.
Feeling full isn't always the same as being well fed
Hunger and fullness are useful signals, but they aren't precise measures of how much energy or nourishment we've had.
A large bowl of vegetable soup may leave us feeling physically full because of its water and volume. If it provides little protein or energy, however, hunger may return relatively soon.
The feeling that brings a meal to an end is called satiation. Satiety describes how long a meal keeps hunger away, in other words, what keeps you fuller for longer.
Protein, fibre, energy density and the overall composition of a meal influence both the sense of fullness and satiety. A meal that provides enough nourishment and keeps hunger at bay can make managing food intake considerably easier.
Two meals can provide the same calories yet leave us feeling very different afterwards. Protein, fibre, food volume and texture all play a part. Even when calories and macronutrients are similar, solid foods and liquid meal replacements may affect hunger differently. [5]
Calories tell us how much energy food provides, but not how satisfying a meal will be or whether it provides the nutrients we need. This is why eating less shouldn't be the only focus when planning meals. What we eat matters just as much for our health, even when fat loss is the goal.
Our beliefs and expectations about food can influence how much we eat
In one experiment, participants ate the same three-egg omelette but were led to believe it contained either two or four eggs. Those who thought they'd eaten four eggs consumed less food later in the day, even though the breakfast was identical. [6] This was a small study, but it offers an interesting insight: what we believe we've eaten can influence our subsequent choices, not just what's actually on the plate.
Our expectations about food can even influence physiological responses. In another experiment, participants drank the same 380-calorie milkshake, but on one occasion were told it was a rich, indulgent shake containing 620 calories, and on another that it was a light, sensible shake containing just 140 calories. Despite consuming exactly the same shake, their levels of ghrelin, the hunger hormone that signals hunger when it is high, fell more sharply after the supposedly indulgent version. However, participants did not report significantly different levels of hunger. [7]
The findings suggest that our expectations can influence how our bodies respond to food.
Can our eating routines influence when we feel hungry?
Some people feel hungry around regular meal times, more or less. Others eat at random times, graze throughout the day or find it difficult to distinguish physical hunger from the desire to eat.
Our appetite is influenced not only by how much we've eaten, but also by learned patterns and expectations. Research suggests that ghrelin, the hunger hormone mentioned before, may rise in anticipation of habitual meal times. [8]
This doesn't mean everyone develops predictable hunger patterns. Nor does it mean that feeling hungry at a particular time necessarily reflects an immediate need for energy.
A reasonably consistent meal routine may help some people recognise their hunger patterns and avoid long gaps that leave them excessively hungry. Others may prefer more flexibility. Generally, there is no universally ideal number of meals or fixed eating schedule.
Why do we want food when we're not hungry?
A filling dinner doesn't necessarily stop us wanting pudding.
Hunger reflects our physiological need for energy and nutrients. Appetite is also influenced by how appealing food looks, smells and tastes, and by the pleasure we anticipate from eating it.
As we eat a particular food, its appeal tends to fade, but something with a different flavour or texture may remain tempting. Researchers call this sensory-specific satiety, which explains why dessert can still appeal after a satisfying savoury meal and how easy it is to go for a second helping at a buffet. [9]
Habits play a part too. When eating is associated with an activity, that activity can become a cue for the desire to eat, even without physical hunger. Think of snacking while watching TV or having popcorn, nachos and large fizzy drinks at the cinema.
And food does much more than provide energy. It offers comfort, pleasure, a way to celebrate and connect with other people.
There's nothing inherently wrong with eating for enjoyment or comfort. But when food becomes our main response to difficult emotions, and the habit no longer serves us well, it's worth exploring what else might help.
Recognising the difference between hunger, appetite and habitual eating gives us more information about our choices. It doesn't mean every desire to eat needs to be resisted, but we can be more conscious of our choices.
Our food environment makes a difference
How much we eat is also influenced by the portions we're served, the foods available to us and how easily we can eat them. A Cochrane review found that people generally consumed more when offered larger portions or packages. [10]
The characteristics of food matter too. In a 2019 controlled trial, 20 adults ate approximately 500 more calories per day on an ultra-processed diet compared with an unprocessed diet. They also ate faster. [11]
A more recent trial investigated the impact of slower eating rate more directly. Forty-one participants ate approximately 370 fewer calories per day when offered ultra-processed food with textures that encouraged slower eating. Both diets offered similar portions, had the same energy density and contained foods participants liked. [12]
These were small studies, but they demonstrate that food characteristics and eating rate can influence intake, even when people are free to decide how much to eat.
Our environment offers practical opportunities for positive changes too. Keeping nourishing foods within easy reach, planning for busy days and serving portions that suit our needs can make choices that support our health easier to stick with.
The aim isn't to eliminate foods we enjoy or depend on constant restraint and calculation. It's to make nourishing, satisfying choices easier in everyday life.
What if we started with nourishment and self-care?
Restrictive diets often focus on what to remove. A more useful starting point is to consider how we can add more of what our body needs.
Adequate protein, vegetables, fruit, wholegrains, healthy fats and sufficient energy contribute to nourishment and satisfaction. Building meals around these basics can support health and make a moderate energy deficit easier to manage.
Sleep, regular movement and managing stress also matter. Poor sleep can influence appetite and food choices, [13] while a demanding day may leave little time to prepare a meal or make considered decisions.
Looking after these needs supports long-term health. It can also make the behaviours involved in fat loss, maintaining muscle and managing body composition more achievable.
Slow down and enjoy your food
Eating slowly and mindfully offers an opportunity to reconnect with the experience of eating. Rather than rushing through a meal, we can notice the flavours and textures, enjoy each mouthful and pay attention to how hunger and satisfaction change.
This can help develop interoceptive awareness, the ability to recognise and interpret internal bodily signals. Those signals aren't always clear, and they don't tell us exactly how many calories we've eaten. But learning to notice them can help us understand our needs and make more deliberate choices.
Mindful eating isn't another technique for forcing ourselves to eat less. Sometimes slowing down helps us recognise when we're comfortably satisfied. Just as importantly, it gives us time to enjoy the experience of eating and make conscious choices about what and how much we eat.
Treat yourself with the care you'd offer someone you love
Consider how we'd respond to a child who was hungry, tired or overwhelmed. We'd try to understand what she needed, offer nourishment and help her feel better.
We can extend the same care to ourselves. Self-compassion doesn't mean ignoring our goals or avoiding responsibility. It means responding to difficulties constructively instead of being harsh and critical. It means approaching difficulties with curiosity rather than judgement.
An evening of eating more than intended doesn't require punishment, skipping breakfast or starting another strict diet. It offers an opportunity to consider what happened. Was there genuine hunger? A stressful day? An unsatisfying meal? A habit that has become automatic?
The answers may help us make a different choice next time.
Build flexibility rather than more rules
A way of eating that works only when everything goes to plan is unlikely to serve us well for long. Social occasions, holidays, demanding workdays and unexpected changes are ordinary parts of life.
Flexible eating allows us to adjust portions, meal choices and routines without treating every deviation as a reason to abandon our intentions.
This doesn't mean that anything goes or that consistency is not important. It means learning to maintain a useful pattern without needing every meal or every day to be perfect.
With practice, the ability to adapt and return to habits that serve our goals becomes part of the process.
A better way to approach fat loss
Fat loss requires an energy deficit, but achieving it doesn't mean eating as little as possible, ignoring hunger or giving up foods we enjoy.
We can begin by nourishing ourselves well, paying attention to hunger, fullness and satisfaction cues, understanding what influences our appetite and making our food environment more supportive.
We can learn to slow down, enjoy eating and recognise what our bodies need. We can respond to difficulties with curiosity and care, and develop the flexibility to adapt when life doesn't go to plan.
These are skills worth developing whether or not weight loss is the immediate goal.
Food is one of life's pleasures, as well as a source of nourishment. A sustainable approach to eating should make room for both.
The aim is to become better at caring for ourselves, not simply better at following a diet.
If you'd like help finding a way of eating that supports your health, your goals and your life, get in touch. We can arrange a free discovery call to talk about what matters to you and how coaching could help.
Next: Omega-3 supplements: Do we really need them?
References
Sumithran P et al. (2011). Long-Term Persistence of Hormonal Adaptations to Weight Loss. New England Journal of Medicine, 365(17), 1597–1604.
Jones N, Rogers PJ. (2003). Preoccupation, Food, and Failure: An Investigation of Cognitive Performance Deficits in Dieters. International Journal of Eating Disorders, 33(2), 185–192.
Westenhoefer J, Stunkard AJ, Pudel V. (1999). Validation of the Flexible and Rigid Control Dimensions of Dietary Restraint. International Journal of Eating Disorders, 26(1), 53–64.
Polivy J, Herman CP. (2020). Overeating in Restrained and Unrestrained Eaters. Frontiers in Nutrition, 7, 30.
Stull AJ et al. (2008). Liquid and Solid Meal Replacement Products Differentially Affect Postprandial Appetite and Food Intake in Older Adults. Journal of the American Dietetic Association, 108(7), 1226–1230.
Brown SD et al. (2020). We Are What We (Think We) Eat: The Effect of Expected Satiety on Subsequent Calorie Consumption. Appetite, 152, 104717.
Crum AJ, Corbin WR, Brownell KD, Salovey P. (2011). Mind Over Milkshakes: Mindsets, Not Just Nutrients, Determine Ghrelin Response. Health Psychology, 30(4), 424–429.
Frecka JM, Mattes RD. (2008). Possible Entrainment of Ghrelin to Habitual Meal Patterns in Humans. American Journal of Physiology: Gastrointestinal and Liver Physiology, 294(3), G699–G707.
Rolls BJ et al. (1981). Variety in a Meal Enhances Food Intake in Man. Physiology & Behavior, 26(2), 215–221.
Hollands GJ et al. (2015). Portion, Package or Tableware Size for Changing Selection and Consumption of Food, Alcohol and Tobacco. Cochrane Database of Systematic Reviews, Issue 9, CD011045.
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.
Forde CG et al. (2026). 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.
Zhu B et al. (2019). Effects of Sleep Restriction on Metabolism-Related Parameters in Healthy Adults: A Comprehensive Review and Meta-analysis of Randomized Controlled Trials. Sleep Medicine Reviews, 45, 18–30.