The Claim
In non-obese adults aged 21–50, a 25% caloric restriction over two years is associated with proportional improvements in cognitive performance and resting metabolic rate, independent of changes in energy intake or body mass, suggesting that metabolic efficiency may mediate cognitive benefits during long-term energy restriction.
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 healthy adults between 21 and 50 years old, reducing calorie intake by 25% for two years is linked to modest improvements in memory and metabolic rate, even when body weight and total energy consumption do not change, which may indicate that changes in how the body uses energy influence cognitive function.
See the scientific wording
In non-obese adults aged 21–50, a 25% caloric restriction over two years is associated with proportional improvements in cognitive performance and resting metabolic rate, independent of changes in energy intake or body mass, suggesting that metabolic efficiency may mediate cognitive benefits during long-term energy restriction.
What the research says
1 studyWhen people ate 25% less food for two years without losing weight, their brains worked better—and this was linked to their bodies becoming more efficient at using energy, not because they ate less or lost 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.