Lower Protein May Boost Healthy Aging
A new review of over 350 studies suggests that reducing protein intake may improve metabolic health and potentially extend lifespan. While protein is essential for muscle growth, researchers argue that many sedentary individuals consume more than necessary, which may have long-term health drawbacks.
Why it matters
This challenges current dietary trends favoring high-protein intake and highlights the complex relationship between nutrition, aging, and metabolic health.
Protein-fortified foods are popping up everywhere, from cereal and coffee to even protein water. But a new review covering over 350 papers on protein restriction and aging - publishing July 31 in the Cell Press journal Cell Press Blue - suggests that consuming less protein could have greater health benefits and could, in some cases, extend lifespan. The authors describe how protein restriction slows aging by improving metabolism, changing how cells respond to nutrients, reducing cellular damage, and preserving healthy cell function.
"It's absolutely crystal clear that there are benefits of protein to muscle growth and exercise response of active individuals," says Dudley Lamming, the paper's corresponding author, of the University of Wisconsin-Madison. "But because most people are relatively sedentary, many people are likely consuming more protein than they actually need, which probably has negative health consequences."
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