The Claim
In healthy adults undergoing 24 months of 25% caloric restriction, reductions in liver, heart, and skeletal muscle mass contribute to metabolic adaptation, while changes in brain and kidney mass are minimal and not significantly different from controls.
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.
When healthy people eat 25% fewer calories for two years, their liver, heart, and muscles shrink a bit, which helps their body adjust to less food—but their brain and kidneys stay about the same size as people who eat normally.
See the scientific wording
In healthy adults undergoing 24 months of 25% caloric restriction, reductions in liver, heart, and skeletal muscle mass contribute to metabolic adaptation, but changes in brain and kidney mass are minimal and not significantly different from controls.
When food intake drops by 25% for two years, the liver, heart, and muscles shrink because they use a lot of energy, and the body saves energy by making them smaller. The brain and kidneys stay the same size because they are essential for survival and cannot shrink without risk. This shrinkage of energy-hungry tissues causes the body to burn fewer calories at rest than expected from just losing weight.
What the research says
1 studyWhen people ate 25% less food for two years, their liver, heart, and muscles got a little smaller, but their brain and kidneys stayed the same size — just like the claim says. This helped their body use less energy, which is why they burned fewer calories than expected.
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.