Energy balance
Weight loss slows down and eventually plateaus because energy expenditure decreases as body composition shifts (specifically, loss of metabolically expensive lean tissue), creating a new steady state where energy intake equals expenditure.
Expect your weight loss to slow down and stop at a new 'plateau' even if you keep eating the same amount less. This happens because your body burns fewer calories as it gets smaller and loses muscle. To continue losing weight, you must further reduce calories or increase activity to match your new, lower energy expenditure.
in reality, the body’s energy-expenditure rate decreases during weight loss, thereby attenuating the energy deficit induced by the diet. Thus, weight loss will slow down over time and eventually reach a new steady state, where energy intake is again balanced by energy expenditure.
Why this rating
Based on a steady-state model validated against 8 longitudinal studies with 157 subjects.
Source
Mechanisms of Metabolic Fuel Selection: Modeling Human Metabolism and Body-Weight Change
Kevin D. Hall · IEEE Engineering in Medicine and Biology Magazine · 2010
DOI 10.1109/memb.2009.935465
More from this paper
- The popular '3,500 kcal/lb' rule for weight loss is mathematically incorrect because it assumes a constant energy density of lost tissue, whereas actual weight loss involves a nonlinear shift between fat and lean mass that changes the caloric equivalent per pound lost.Strong
- Obese individuals lose more total weight than leaner individuals for the same caloric deficit, but it takes significantly longer to reach the weight loss plateau due to a higher proportion of fat mass loss and slower metabolic adaptation.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 →