A new U.S. population study reveals that time-restricted eating (TRE) may slow biological aging in key organs, with breakfast timing playing a critical role.
Researchers analyzed data from nearly 4,900 participants in the National Health and Nutrition Examination Survey (2003-2018). They found that moderate fasting durations-neither too short nor too long-were associated with healthier aging markers in the heart, liver, and kidneys.
Crucially, the benefits were most pronounced among metabolically healthy individuals who ate breakfast on time. Poor metabolic health and obesity, by contrast, accelerated biological aging and worsened cardiovascular metrics.
The findings suggest personalized TRE strategies could help modulate organ-specific aging, though larger prospective studies are needed to confirm long-term effects.