mechanistic
Analysis v1
Strong Support
When male mice are fed a low-protein diet, their fat tissue undergoes changes in mitochondrial function, but these changes do not occur if the mice lack the FGF21 protein, showing that FGF21 is necessary for the metabolic response to protein restriction.
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Evidence from Studies
Supporting (1)
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Community contributions welcome
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Dietary protein restriction elevates FGF21 levels and energy requirements to maintain body weight in lean men
Randomized Controlled Trial
Human & Animal
2025 MarWhen mice eat less protein, their fat cells change how they use energy, but only if they have a special protein called FGF21. If mice don’t have FGF21, those changes don’t happen — so FGF21 is needed for the change.
Contradicting (0)
0
Community contributions welcome
No contradicting evidence found
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.