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Set Point Theory

The idea that your body defends a natural weight range — explaining why weight loss plateaus happen and why long-term support matters.

Set point theory suggests that your body has a built-in weight range it tries to maintain, like a thermostat for body fat. When you lose weight, your body may fight back by slowing your metabolism and increasing hunger. Understanding this can help you be kinder to yourself during weight loss plateaus.

Set point theory proposes that body weight is regulated by a homeostatic feedback system involving the hypothalamus, adipose-derived hormones (leptin, adiponectin), and gut peptides (ghrelin, GLP-1, PYY). Weight loss below the set point triggers compensatory responses — reduced resting energy expenditure, increased hunger signalling, and decreased satiety — which contribute to weight regain in the absence of ongoing intervention.

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Medical Disclaimer

This library is for general education and does not replace individual assessment by a qualified healthcare professional. Always consult a doctor for medical advice, diagnosis, or treatment.

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