Changes in the body that come from space travel resemble growing older, providing opportunities to perform aging studies on astronauts.

astronaut-aging-in-space

Spending time in outer space can mimic the effects of aging, and scientists have begun using the unique environment of space as a place to study aging.

Space Travel (How Does It Affect Aging?) - NAD.com

Longevity

Boosting nicotinamide adenine dinucleotide (NAD+) levels restores improves circadian rhythms in old mice through youthful gene activation and metabolic patterns, revealing that NAD+ governs both behavior and metabolic health.

How Does Space Travel Affect Natural Aging?

Keeping the Mouse Body Clock Young to Counter Aging Requires NAD+