The Bortz Biological Age Clock Could Outperform PhenoAge for Tracking Longevity
Mike Lustgarten explores whether the Bortz biological age clock beats PhenoAge as a tool for measuring how fast you're aging.
Summary
Biological age clocks help measure how your body is aging relative to your chronological age. In this video, Mike Lustgarten examines the Bortz biological age clock — a blood-based tool for estimating biological age — and compares it to PhenoAge, one of the most widely used aging clocks. Lustgarten, who tracks his own biomarkers obsessively, evaluates whether the Bortz clock offers better accuracy or actionability for people trying to slow aging. He provides links to test the Bortz biomarkers through lab services and a calculator to compute your Bortz biological age score. This matters because choosing the right aging clock can shape how effectively you monitor and respond to lifestyle interventions aimed at extending healthspan.
Detailed Summary
Biological age clocks are becoming essential tools for anyone serious about longevity. Unlike chronological age, biological age reflects how your body is actually performing at a cellular and systemic level — and tracking it accurately can help people make smarter decisions about diet, exercise, supplements, and other interventions. This video by researcher and self-experimenter Mike Lustgarten puts two prominent blood-based aging clocks head to head: the Bortz biological age clock and the well-established PhenoAge.
PhenoAge, developed by Morgan Levine and colleagues, uses a panel of standard blood biomarkers to estimate biological age and has strong published validation linking it to mortality risk. Lustgarten has long used PhenoAge as a personal benchmark. The Bortz clock appears to be a newer or less mainstream alternative, also derived from blood biomarkers, that Lustgarten is now evaluating for potential superiority in tracking aging trajectories.
Key points from this video include an introduction to the Bortz clock's biomarker panel, a comparison of its predictive or tracking capabilities versus PhenoAge, and practical guidance on how viewers can test and calculate their own Bortz biological age. Lustgarten directs his audience to specific lab panels and an online calculator, making this immediately actionable for health-optimizing individuals.
For longevity-focused adults, the practical implication is significant: if the Bortz clock is more sensitive or reliable than PhenoAge, it could serve as a better feedback tool for measuring whether interventions like dietary changes, exercise protocols, or supplementation are genuinely slowing biological aging.
However, without a transcript, the specific data, statistical comparisons, and Lustgarten's personal results cannot be fully assessed here. Viewers should watch the full video and consult primary literature on both clocks before drawing firm conclusions about which is superior for their own tracking.
Key Findings
- The Bortz clock is a blood-based biological age tool being compared to the widely validated PhenoAge clock.
- Viewers can test Bortz biomarkers through linked lab panels and calculate biological age via an online tool.
- Choosing a more sensitive aging clock improves your ability to track whether lifestyle interventions are working.
- PhenoAge remains a validated benchmark; the Bortz clock's advantages over it are evaluated in this episode.
- Self-tracking biological age through blood biomarkers is actionable and accessible without a doctor's order.
Methodology
Mike Lustgarten holds a PhD and is a researcher at Tufts University's HNRCA, known for rigorous self-quantification and data-driven longevity content. This video appears to be a comparative analysis episode within his ongoing personal biomarker tracking series. No transcript was available, so analysis is based on the video title, description, and linked resources.
Study Limitations
This summary is based on the video description and linked resources only — no transcript was available, so specific data, methodology details, and Lustgarten's personal findings could not be reviewed. The relative validity of the Bortz clock versus PhenoAge should be verified against peer-reviewed literature before clinical or personal reliance. Affiliate links in the description suggest potential commercial relationships that viewers should factor into their assessment.
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