Eating enough nutrients helps your body keep its muscle mass so you don't lose muscle.
See the scientific wording
In humans, adequate nutrition (sufficient nutrient intake to support muscle) helps maintain skeletal muscle mass, with specific nutrient composition, dosage, duration, and effects on skeletal muscle function not reported.
Not tested yet
No study measured the main part of this claim. No part of this claim has been tested yet.
Not tested yet
No study measured the main part of this claim. No part of this claim has been tested yet.
Parts of this claim
Adequate nutrition helps maintain skeletal muscle mass.
Not testedNo studiesAdequate nutrition helps maintain skeletal muscle function.
Not testedNo studies
Evidence is judged against each part on its own, so a study that tests one part never counts as a verdict on the whole claim.
What the research says
3 studies reviewedSupporting (1)
Systematic Review With Meta-AnalysisMeta-analysis2026
In older people, adding protein supplements to exercise helped them keep more muscle and strength, but not necessarily move faster. This backs the idea that good nutrition helps muscle.
Contradicting (2)
Randomized Controlled TrialHuman2021
The study found that just taking protein supplements didn't help older adults keep or grow muscle. Only when they also did heavy weight lifting did they get stronger and bigger muscles. So eating extra protein alone may not be enough.
Randomized Controlled TrialHuman2020
In older people who didn't eat enough protein, taking nutrition supplements didn't help them keep or build muscle any better than exercise alone. Only exercise improved their strength and walking, so extra nutrients didn't show the muscle benefit the claim suggests.
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Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting, 2 contradicting studies
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