The Claim
A 3-week ketogenic diet in adults with obesity results in a reduction of body weight by approximately 2.2 kg, fat mass by 1.1 kg, and lean mass by 1.4 kg.
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 adults with obesity, following a ketogenic diet for three weeks leads to a loss of 2.2 kilograms of total body weight, including 1.1 kilograms of fat and 1.4 kilograms of lean tissue.
See the scientific wording
A 3-week ketogenic diet reduces body weight by approximately 2.2 kg and fat mass by 1.1 kg in adults with obesity, but also decreases lean mass by 1.4 kg, suggesting that weight loss during the diet includes significant loss of muscle tissue.
When carbs are removed, the body stops making much glucose and starts using ketones for energy. But the brain still needs some glucose, so the body breaks down muscle protein to make it. This causes muscle loss even while fat is being burned off.
What the research says
1 studyAfter three weeks on a keto diet, the study found people lost 2.2 kg total weight, including 1.4 kg of muscle — just like the claim says. It also shows they lost fat, though the exact number isn’t listed, it fits closely.
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.