Longevity interventions share chemical patterns in male mice
Chemical profiles across seven tissues distinguished controls from male mice given one of five lifespan-extending interventions from 4 to 12 months of age.
Limit: Models lacked validation against interventions that do not extend lifespan
Edited by Boris Djordjevic · AgingResearch.News
In an animal experiment, male UM-HET3 mice received rapamycin, acarbose, 17α-estradiol, canagliflozin or food restriction from 4 to 12 months of age. At 12 months, researchers measured small molecules in seven tissues, including blood plasma and brain. Computer models trained on untreated controls and four interventions distinguished mice given the fifth intervention from controls before survival differences emerged.
The most informative molecules differed substantially between tissues. Ergothioneine, a dietary antioxidant, was the only molecule that ranked highly in more than two tissues. All five interventions raised its levels in plasma and brain; four raised it in muscle. The researchers also found coordinated changes in classes of fats in plasma, fat around the reproductive organs and kidney.
Why it matters
The authors suggest that metabolic measurements could help screen candidate anti-aging drugs.
Caveats
The models still need validation against interventions that do not extend lifespan. The results came from male mice only, and the preprint has not been peer-reviewed.
Acarbose is part of Bryan Johnson's Blueprint
The paper
University of Michigan
bioRxiv, Jul 2, 2026, Open access, Preprint, not peer-reviewed