09/09/2026
Can we dial down the DNA mutations that naturally accumulate with age?
A new NYU Langone Health study in Cell Press offers an intriguing clue.
Researchers found that mice eating 30 percent fewer calories accumulated fewer naturally occurring DNA mutations across multiple tissues, including the liver and kidney. It’s the first time the effect has been demonstrated across a large fraction of the genome—not just in individual genes.
The pattern was especially striking in the quieter, less active stretches of DNA, offering a possible clue to how calorie restriction affects mutation buildup.
But this isn’t a case for extreme dieting. The mice were calorie-restricted for much of their lives, an approach that would be difficult to sustain—and potentially harmful—in people.
The more interesting implication is biological: the processes that influence how quickly mutations accumulate may not be entirely fixed.
First author Marta Grońska-Pęski, PhD, a postdoctoral fellow at NYU Grossman School of Medicine, and corresponding author Gilad D. Evrony, MD, PhD, an investigator in NYU Langone’s Center for Human Genetics and Genomics and the Jacob D. Goldfield Associate Professor of Pediatrics and Neuroscience at NYU Grossman School of Medicine, led the work with collaborators at University Hospitals Cleveland, the University of Texas Southwestern Medical Center, and the National Institutes of Health.
If researchers can identify the mechanisms—the biological levers that influence mutation rates—it may eventually be possible to slow mutation buildup in safer, more practical ways without dramatically cutting calories.
Gilad D. Evrony, MD, PhD, discusses what his team found—and where the science goes next.
Watch the full video or read more ➡️ https://bit.ly/4cxrVm7