A blood test could predict short-term longevity

Published on March 16, 2026 | Translated from Spanish

A study published in Aging Cell identifies a possible biomarker for assessing survival in older adults. Analyzing more than 1,200 people aged 71 or older, it was discovered that six RNA molecules (piRNAs) can predict mortality within two years with 86% accuracy, surpassing classic markers like age.

A scientist analyzes an RNA graph on his computer, while an older adult watches with hope.

The technology behind the discovery: simulation and non-coding RNA 🔬

The research focused on piRNAs, small RNA molecules linked to processes such as cellular repair and immunity. Using computational models, scientists simulated the effect of adjusting their levels, observing a theoretical improvement in survival. However, they acknowledge that such extreme changes might not be viable in a real organism, highlighting the underlying biological complexity.

Your next check-up: "Low in piRNAs" as a lifestyle? 💉

Imagine the conversation at the pharmacy: Do you have anything to lower my piRNAs? I want to reach a hundred. Although the idea of adjusting these levels like regulating cholesterol sounds tempting, experts remind us that, for now, it is only a risk indicator. Perhaps, instead of obsessing over a molecule, continuing to enjoy the daily walk remains the most reliable "technology" to go far.