Systems Are Not Habits: Why Weight Regain Keeps Happening

Bronwyn Fletcher
3 days ago
2 min read

When women talk about weight loss, the conversation almost always turns to habits.

Better habits. Healthier habits. More consistent habits.

The assumption is simple: if you can change your habits, you can change your weight. But this assumption doesn’t hold when weight keeps coming back.

Because habits don’t explain weight regain.

Systems do.

A habit is a repeated behaviour.

An eating system is a structure made up of interacting parts: biology, food rules, emotional responses, environment, stress, and more.

When weight loss is approached through habits, the habits are often hacks, tips and tricks to change your behaviour around what you eat.

But those behaviours are outputs.

They are not the cause.

This is why habit-based approaches often feel effective at the beginning. You can change a behaviour temporarily. You can stop afternoon snacking. You can stick with drinking a glass of water before every meal to help you feel fuller.

But these changes only touch the surface. Underneath system has not changed.

And systems seek balance.

When you cut down your food intake, the system responds. Hunger increases and relief eating becomes most likely.

From the surface, this catch-up eating looks like a lack of willpower.

From a systems view, it is predictable.

This is also where the idea of ‘bad habits’ becomes misleading.

What appears to be a habit is often a rule in action.

‘I must finish what’s on my plate.’‘ I can’t waste food.’‘ I deserve this after a long day.’‘ I’ve already blown it.’

These rules operate automatically. They drive behaviour without conscious thought. And because they repeat, they are mistaken for habits.

So, the solution becomes: replace bad habits with good ones.

But these old rule remains.

And the system continues to produce the same outcome.

This is why habit stacking becomes a problem.

Why Weight Regain Keeps Happening

Women can start adding more habits to cover all the things they’re trying to change. They add more rules which usually means more effort.

It becomes a task list of eating changes.

And that creates cognitive overload.

Women end up managing their eating manually and trying to stay consistent under the load. The level of effort collapses under the strain, the weight returns and the cycle continues.

The task is not to find more or better habits.

The task is to unravel the system.

Because systems are made of interacting parts and that structure drives eating behaviour. Until those interacting parts are understood, weight regain will continue to feel like failure. And the same solutions will be repeated with no lasting effect.

The alternative is using diagnostics to map the system and identify the rules driving the eating patterns.

You want to understand what eating is doing, not just what it looks like.

Then once the system is visible, permanent change becomes possible.

Because once it's known, you can apply a solution that matches the underlying problem - why weight regain keeps happening.

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