Weight Regain Risk Checker

Why weight regain is common

Weight loss triggers a cascade of physiological responses that collectively favour regain: reduced leptin, elevated ghrelin, decreased metabolic rate, and reduced satiety signalling. These hormonal changes can persist for years after weight loss and increase hunger and reduce energy expenditure relative to a person who never lost weight at the same body weight. This is not a character failing — it is a documented physiological reality.

The National Weight Control Registry, which tracks people who have maintained 13 kg+ of weight loss for 1 year or more, consistently identifies common habits among successful maintainers: frequent self-monitoring, high physical activity, consistent diet patterns including breakfast, limited television, and responding to small weight gains quickly.

Modifiable risk factors

Sleep, stress, protein intake, and exercise frequency are the four factors with the strongest modifiable evidence base for maintenance. Resistance training is specifically important because regained weight in the absence of resistance exercise is predominantly fat rather than lean mass, compounding metabolic rate suppression.