If Not Dieting, Then What? A Non-Diet Approach to Health
One of the most common questions that comes up in clinic is this: if not dieting, then what? It is a fair question, and one worth taking seriously. Australian physician Dr. Rick Kausman explored it in his book of the same name,1 and it has shaped the way many dietitians approach nutrition. If dieting is not the answer, and the evidence increasingly suggests it is not, then there needs to be a clear alternative. This post outlines what that looks like in practice.
Body weight is influenced by a wide range of factors that sit outside of individual choice. Genetics, hormonal function, medications, medical conditions, sleep, stress, and the environment all play a role. Research consistently shows that while lifestyle behaviours can influence health, they do not dictate body weight in a straightforward or predictable way. Two people can eat very similarly and move just as much and carry very different body weights.2
Understanding this can actually be freeing. Rather than spending energy trying to control a number that is not fully within your control, it opens the door to focusing on the things that are. Your daily food choices, movement, sleep, and how you manage stress have a direct impact on how you feel, and they respond to change in ways the scale often does not.
The research is clear on this: health behaviours are a stronger predictor of health outcomes than body size alone. Markers such as blood glucose, blood pressure, cholesterol, energy levels, strength, and fitness are meaningfully influenced by what we eat and how we move, independent of weight change. A person can significantly improve their metabolic health, cardiovascular risk profile, and quality of life without any change in body weight.2,3
When weight becomes the main measure of progress, those real wins can get completely overlooked. Someone who has improved their eating patterns, increased their vegetable intake, is sleeping better, and feels stronger may see no movement on the scale and conclude that nothing is working. Shifting what we measure is one of the most meaningful changes a person can make.
Health behaviours, not body size, are often a far more meaningful indicator of how well someone is doing. This shift in focus is at the heart of what Dr. Kausman's work describes.1
The majority of people who lose weight through dietary restriction regain it within three to five years, and many end up at a higher weight than where they started. This is not a small percentage. It is the overwhelming pattern in the research. Repeated cycles of restriction and regain can affect metabolism, increase preoccupation with food, and erode the relationship with eating over time.2
A big part of why this happens is biology. When the body is restricted, it responds with hormonal adaptations that drive hunger up and energy expenditure down. These are not signs of weakness. They are the body doing exactly what it is designed to do to protect itself. No amount of willpower overrides that for long.
There is also the question of sustainability. Most diets are built around rules that may work in the short term but were never designed to fit real, everyday life. They tend to be all-or-nothing, eliminate whole foods or food groups, and require constant vigilance. When life gets busy, stressful, or social, those rules start to break down. That is not a character flaw. It is what happens when a rigid system meets the complexity of being human.
Dieting also tends to disconnect people from internal hunger and fullness cues over time, making it harder to eat in response to what the body actually needs. Understanding all of this can help lift some of the blame that so often follows a history of dieting.
Not dieting does not mean ignoring nutrition. It means approaching food and movement in a way that is nourishing, sustainable, and not driven by a number on a scale. In practice, this looks like:
Eating regular, balanced meals. Consistent meal timing supports stable blood glucose, energy levels, and appetite regulation. Skipping meals or eating too little across the day tends to increase hunger and make food choices feel harder later on.
Choosing nutrient-dense foods most of the time. The focus is on what to add to the plate. Plenty of vegetables, fruit, wholegrains, legumes, protein, and healthy fats provide the nutrients the body needs. There is room for all foods, with an understanding that variety and nourishment are the goal rather than restriction.
Moving in ways that feel good. Movement for enjoyment, energy, strength, and mental wellbeing looks very different from movement used purely to compensate for eating. Finding forms of movement that feel rewarding rather than punishing makes it far more likely to be sustained over time.
Rebuilding trust with food and the body. For many people who have dieted repeatedly, reconnecting with hunger and fullness cues and letting go of food rules takes time. This is a process, not a switch, and working with a dietitian who takes a non-diet approach can make it significantly more manageable.
When weight is removed as the primary measure of progress, other markers become more visible and often more motivating. These might include energy levels across the day, sleep quality, mood, how food choices feel rather than whether they were "good" or "bad", strength and fitness capacity, blood results, and the overall relationship with food and eating.
Progress in these areas is meaningful regardless of what the scale shows. A non-diet approach is not about giving up on health. It is about pursuing it in a way that is grounded in evidence, kind to the body, and actually sustainable over time.
Looking for a Different Approach to Nutrition?
If you are tired of dieting and looking for a more sustainable, evidence-based way forward, that is exactly the kind of work done at Nula Nutrition. Registered dietitian consultations are available in Calgary and online across Alberta, including Canmore, Banff, Edmonton, and Cochrane.
Ready to move away from dieting and build a sustainable approach to nutrition?
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Written by Madison Hows RD APD
References
1. Kausman R. If Not Dieting, Then What? Allen and Unwin; 2004.
2. Bacon L, Aphramor L. Weight science: evaluating the evidence for a paradigm shift. Nutrition Journal. 2011;10:9. PMID: 21261939
3. Gaesser GA, Angadi SS. Obesity treatment: weight loss versus increasing fitness and physical activity for reducing health risks. iScience. 2021;24(10):102995. PMID: 34755078
