Is protein aging you faster? What the latest research actually says

879. Are you eating too much protein, or not enough? The honest answer is that the question itself is flawed, because there's no single number that fits everyone.

In this episode, Monica breaks down why protein needs shift across a lifetime. The mTOR "growth switch" inside your cells runs hot during childhood, powering the tissue-building that young bodies require. In your 30s and 40s, dialing protein back may nudge cells toward repair and cleanup instead. And after 50, when muscle naturally starts to decline, eating more actually helps preserve strength, mobility, and bone health well into later years.

She also puts the recent longevity headlines in context. A widely covered review of animal studies found that lower protein intake can extend lifespan in flies and rodents, yet those results don't map neatly onto human biology, where lifestyle, genetics, and the rest of your diet all shape how you grow older.

Monica offers a more grounded way to think about protein: match your intake to your age, sex, and activity level, and treat the current RDA as a floor rather than a goal.

nutritionovereasy.com/calculator

Join us for a live show taping on September 17 in New York City. Details at wellnessworkshere.com/live.

New to Nutrition Diva? Check out our special Spotify playlist for a collection of the best episodes curated by our team and Monica herself!

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Find out about Monica's keynotes and other programs at WellnessWorksHere.com

Nutrition Diva is a part of the Quick and Dirty Tips podcast network.

References

The hallmarks of protein and amino acid restriction in aging and longevity: Cell Press Blue

Low Protein Intake Is Associated with a Major Reduction in IGF-1, Cancer, and Overall Mortality in the 65 and Younger but Not Older Population: Cell Metabolism

New Horizons: Dietary protein, ageing and the Okinawan ratio | Age and Ageing | Oxford Academic

Dietary protein intake and all-cause mortality: results from The Kawasaki Aging and Wellbeing Project - PMC

The impact of dietary protein intake on longevity and metabolic health - PMC

Protein Intake and Frailty in Older Adults: A Systematic Review and Meta-Analysis of Observational Studies - PMC

Related Episodes

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847 - Does a high protein diet accelerate aging?

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