The Claim
In morbidly obese adults undergoing bariatric surgery, an 8-day very low-calorie diet causes significant loss of both fat-free mass and fat mass, indicating that rapid weight loss does not selectively target adipose tissue and results in compromise of lean tissue integrity.
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.
In morbidly obese adults preparing for bariatric surgery, an 8-day very low-calorie diet leads to equal loss of muscle and fat tissue, showing that rapid weight loss does not spare lean tissue.
See the scientific wording
In morbidly obese adults undergoing bariatric surgery, an 8-day very low-calorie diet results in significant loss of fat-free mass alongside fat mass, indicating that rapid weight loss does not selectively target adipose tissue and may compromise lean tissue integrity.
When the body gets very little food, it starts breaking down muscle tissue for energy because it cannot get enough fuel from fat alone. This breaks down muscle proteins and stops new muscle from being made, causing muscle loss along with fat loss.
What the research says
1 studyEven though the diet was meant to burn fat, it also caused noticeable muscle and lean tissue loss — especially in older and heavier people — meaning the body doesn’t just lose fat during rapid weight loss.
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.