Scientists studying the intricate mechanics behind the human aging process have made a discovery that could lead to improved health later in life. The breakthrough comes courtesy of a common model in anti-aging research in the form of C. elegans roundworms, with the scientists demonstrating that dialing up a form of fatty acid signaling can substantially improve their lifespan.

The research was led by Baylor College of Medicine’s Dr. Meng Wang, who was inspired to study longevity and the aging process by her grandmothers, who lived to the ages of 95 and 100 and seemingly did so without significant health troubles.

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“Neither was ill, and why they died remains a mystery,” she said. “It makes me feel like there’s some secret to longevity, and if we can study this, maybe we can use the knowledge and apply it to everyone.”

Read more: New Atlas