Chapter 2 of 11

Why diets don't work

The diet cycle, why restriction doesn't lead to lasting change, and its impact on your relationship with food.

If you've ever felt like you've 'tried everything' and nothing has worked long term, it's really easy to start thinking… maybe it's just me.

But in the vast majority of cases, it isn't.

Many people on GLP-1 medications have tried to lose weight through dieting for years — trying different approaches, starting over again and again, putting in a lot of effort and still feeling stuck. Studies show that diets can lead to short-term changes, but they rarely lead to something sustainable.

To understand why, it helps to look at the pattern most diets follow.

The diet cycle

Most diets tend to follow the same loop, even if they look different on the surface.

The diet cycle

  1. Restriction
  2. Cravings
  3. Overeating
  4. Guilt
  5. Restart↺ repeats

Restriction often begins with good intentions — you feel motivated, maybe even in control. But then your body starts to respond.

Your body responds by:

  • Increasing hunger signals
  • Intensifying cravings
  • Increasing food noise

This is a completely normal response — your body is designed to protect you. When it senses a drop in energy intake, it adapts by increasing hunger, and this is very rarely something you can override through discipline. Over time, restriction becomes harder to maintain, often leading to periods of overeating, then guilt, and from there the cycle begins again.

Why does restriction not lead to lasting change?

Many diets rely on external rules:

  • What to eat or avoid
  • When to eat
  • How much is 'allowed'
  • Restricting certain food groups

While this can create structure in the short term, it often comes at the cost of disconnecting from your body's own signals.

Over time this can make it harder to:

  • Recognise hunger and fullness signals
  • Trust your food choices
  • Eat in a way that feels both nourishing and satisfying

An all-or-nothing mindset

Restriction can leave you feeling either 'on track' or 'off track', with foods seen as 'good' or 'bad' — and eating starts to feel stressful, instead of something that supports you.

The impact on your relationship with food

After a while, repeated dieting can change how you feel about food. You might notice:

  • Thinking about food more often than you'd like
  • Feeling out of control around certain foods
  • Guilt or anxiety after eating
  • A sense that you can't trust yourself around food

GLP-1 medications can help quiet some of this noise by changing appetite and satiety signals — but they don't automatically rebuild trust with your body or change learned patterns around food.

That part may need a slightly different approach to nutrition.

A different approach

At Genwell, the goal is not to add another layer of food rules. Instead, the focus is to move towards a more sustainable way of eating and living — one that aligns with your real life.

This might look like:

  • Building regular, consistent eating patterns
  • Prioritising nourishment without restriction
  • Reconnecting with hunger and fullness cues over time
  • Developing a more compassionate, flexible approach to food
  • Being less hard on yourself around food

GLP-1 medications can support this process by reducing appetite and creating space to make changes without constantly fighting hunger — giving you a bit of breathing room to build habits that work with your body, not against it.