Amino acid restriction, aging, and longevity: an update.
Level 5 - mechanism / opinion, no new human data
Narrative review of animal models and preclinical mechanisms with no new human clinical data.
PubMed 38757144 · doi:10.3389/fragi.2024.1393216
What was done
The authors reviewed literature examining the effects of dietary and amino acid restriction paradigms—including calorie restriction, low protein, and restriction of methionine, branched-chain amino acids, or isoleucine—on the longevity and health of laboratory animal models, and evaluated their translational potential.
What was found
The abstract provides no numerical data, effect sizes, or statistical metrics. It qualitatively reports that diverse dietary manipulations demonstrate health benefits in standard laboratory species when compared to ad libitum-fed controls.
Why it matters
This paper summarizes targeted amino acid restriction as a potential longevity-extending strategy while highlighting key translational hurdles between standard laboratory housing and real-world conditions.
Limits
The abstract describes a narrative review of animal studies with no human clinical data. Control groups in evaluated studies rely almost exclusively on ad libitum feeding, which may not reflect healthy baselines. Interactions with exercise, geroprotective drugs, and complex non-laboratory environments were not established, and quantitative findings are omitted.
Cited by
- context Essential amino acids such as methionine increase fecundity but are negatively associated with longevity.