The Claim
A 15-day very low-calorie diet results in a resting metabolic rate that is lower than theoretical predictions derived from changes in body composition, demonstrating that metabolic adaptation exceeds the magnitude expected from weight loss alone.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
After 15 days of a very low-calorie diet, the body burns fewer calories at rest than expected based on the amount of weight lost, indicating an additional reduction in metabolic rate beyond what body composition changes alone would explain.
See the scientific wording
After a 15-day very low-calorie diet, resting metabolic rate falls below theoretical predictions based on body composition, indicating that metabolic adaptation exceeds what would be expected from weight loss alone.
When calorie intake drops sharply, the body reduces the amount of active thyroid hormone in the blood, which slows down the energy-burning activity of cells in organs like the liver and muscles, causing the resting metabolic rate to fall more than expected from just losing weight.
What the research says
1 studyStudy: Resting Metabolic Rate, Body Composition and Thyroid Hormones
After losing weight on a very low-calorie diet, the body slowed down its calorie-burning even more than expected just from being smaller — like a car that gets worse gas mileage even after losing weight.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.