Published in Cell Metabolism, the paper suggests protein restriction triggers a coordinated whole-body response that may help explain its effects on healthy aging. Credit: Cell Metabolism
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.
“Protein restriction and the hallmarks of aging: A coordinated physiological adaptive response?”—authored by Dr. Chris Morrison, Dr. Sora Kim and Dr. Sangho Yu of Pennington Biomedical—was recently published in the journal Cell Metabolism. The authors argue that the diverse effects of protein restriction, including changes in metabolism, glucose regulation, energy expenditure, growth and food preferences, should be viewed as interconnected components of a broader response to protein scarcity rather than as isolated biological pathways.
The perspective provides a framework for investigating how the body’s response to protein scarcity may influence healthy aging and longevity and whether that response can be measured or ultimately targeted to improve health across the lifespan.
“The question that drives our work is deceptively simple: How does an animal know it isn’t getting enough protein?” said Dr. Morrison, John S. McIlhenny endowed professor in nutritional neuroscience and associate executive director for basic science. “After years of work, we now believe the brain plays a critical role in coordinating the body’s response to protein restriction, and that these same adaptive changes turn out to extend lifespan.”
Rest of the article;
https://medicalxpress.com/news/2026-09-protein-restriction-trigger-body-wide.html
Link to the published paper;