Biological aging markers don't predict fitness better than age alone in heart failure
In 14 heart failure patients, blood tests measuring "biological age" were linked to exercise fitness, but actual age predicted fitness just as well. Accelerated aging markers did not clearly predict fitness levels.
Why it matters: These findings suggest biological aging clocks may not improve assessment of heart disease severity beyond standard patient age information.
Keep in mind: This was a small pilot study of only 14 patients, so results may not generalize to larger heart failure populations.
AI-assisted explanation based on the supplied abstract. Read the linked source for full context.
What this changes
The finding has not established an approved change to our evidence assessment.
Source date: Sep 17, 2026 · Discovered: Sep 17, 2026 · Assessed: — · Research update
What it does not prove
- Limitations have not yet been verified. Read the primary source.
Extracted from supplied source material; model confidence is not a measured probability of correctness.
Study details
- Design
- Observational
- Sample size
- 14
- Duration
- —
- Population
- Patients with heart failure (HF) enrolled in REDHART2, a clinical trial of interleukin-1 blockade following hospitalization for acute systolic HF
- Primary outcome
- Association between epigenetic age acceleration (EAA) and cardiorespiratory fitness measures in patients with heart failure
- Effect size
- —
- Significance
- Not significant
- Journal
- Epigenomics
- Published
- Sep 17, 2026
Sources
Primary source
- Epigenomics ↗Peer reviewed
Assessment history
9/23/2026 · SUPERSEDED: Source updated; assessment withdrawn pending review.
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