Protein restriction may trigger body-wide program linked to longer life
A new perspective from LSU's Pennington Biomedical Research Center proposes a new way of understanding how dietary protein restriction may promote healthy aging and extend lifespan: through a coordinated physiological response that connects cellular nutrient sensing with hormones, the brain and changes throughout the body.
A new perspective from LSU's Pennington Biomedical Research Center challenges conventional thinking on how dietary protein restriction may promote healthy aging and extend lifespan. Dr. Chris Morrison, Dr. Sora Kim and Dr. Sangho Yu propose that protein restriction triggers a coordinated physiological adaptive response involving cellular nutrient sensing, hormones, the brain, and changes throughout the body.
This response, rather than being isolated biological pathways, should be viewed as interconnected components of a broader system. The authors argue that the hormone FGF21, produced in response to protein scarcity, plays a critical role in coordinating this adaptive reaction, influencing lifespan, metabolism, and food preferences.
The perspective suggests that further research should focus on identifying where in this coordinated response the longevity benefit is encoded, potentially leading to personalized dietary interventions based on biomarkers such as FGF21 responsiveness and changes in protein and essential amino acid appetite.
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