Energy balance
Body weight regulation is not governed by a single fixed set-point, but rather by a dynamic equilibrium where energy expenditure passively adjusts to match intake, creating a 'zone of indifference' bounded by upper and lower intervention points.
Do not assume your body has a rigid 'set point' that fights against you. Your weight settles at a level where your energy expenditure matches your intake. If your environment changes (e.g., more food, less activity), your weight will drift until your expenditure rises to match the new intake. Understanding this passive feedback helps explain why small, sustained environmental changes lead to gradual weight gain over years.
The dynamic equilibrium model suggests that the regulation of body weight is just an illusion, and there is no active control of intake at all. This is because changes in body weight in either direction lead to changes in energy expenditure that will to an extent resist the change.
Why this rating
The paper is a high-level theoretical review synthesizing multiple animal and human studies, though it calls for further experimental testing.
Source
Models of body weight and fatness regulation
John R. Speakman et al. · Philosophical Transactions of the Royal Society B Biological Sciences · 2023
DOI 10.1098/rstb.2022.0231
More from this paper
- The 'Dual Intervention Point' (DIP) model proposes that physiological regulation is weak within a 'zone of indifference' (dynamic equilibrium) but becomes strong only when fatness crosses upper or lower intervention points.Good
- The evolution of human fat storage levels is driven by a trade-off between starvation risk and predation risk, resulting in an optimum fatness that minimizes total mortality, not maximum fat storage.Good
Related findings · Energy balance
- Achieving a total body weight loss of 10-15% (or >10-15 kg) through Total Diet Replacement (TDR) induces remission of Type 2 Diabetes in individuals with short-duration disease.Strong
- Bariatric surgery is superior to medical management alone for inducing significant long-term weight loss, remission of type 2 diabetes, and reduction in mortality for patients with BMI ≥ 40 or ≥ 35 with comorbidities.Strong
- Achieving type 2 diabetes remission requires significant weight loss (≥15 kg) via major caloric restriction, independent of macronutrient composition.Strong
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →