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Frank Bernier on Nature Aging Breakthrough: Urolithin A Just Scored a Big Win for Immune Aging
Frank Bernier, PhD, MSc, CIP/LinkedIn
Nov 11, 2025, 10:48

Frank Bernier on Nature Aging Breakthrough: Urolithin A Just Scored a Big Win for Immune Aging

Frank Bernier, R&D Unit Leader at GLICO, posted on LinkedIn:

”Urolithin A just scored a big win for immune aging.

A new randomized, double-blind, placebo-controlled trial in Nature Aging asked a simple question: if we improve mitochondrial quality, can we make aging immune cells act young again?

Healthy middle-aged adults took Urolithin A (1,000 mg/day) for 4 weeks. The results:
• ↑ Naive-like CD8⁺ T cells
• ↓ Terminally exhausted CD8⁺ T cells
• ↑ Fatty acid oxidation capacity in CD8⁺ T cells
• ↑ Mitochondrial biogenesis in immune cells
• ↑ NK cells and nonclassical monocytes
• Better functional responses (TNF secretion, bacterial uptake)

In other words: tuning mitophagy and mitochondria did not just support immunity in theory. It shifted real human immune cell phenotypes toward a more resilient, “younger” state in weeks.

Longevity is not only about adding years. It is about preserving immune memory, surveillance, and metabolic fitness so the system can still recognise, respond, and repair.

For anyone working in nutrition, microbiome, or healthy aging, this is a strong signal: mitochondria are not a side character. They are a primary target.

Article (Open Access) here.”

Title: Effect of the mitophagy inducer urolithin A on age-related immune decline: a randomized, placebo-controlled trial

Authors: Dominic Denk, Anurag Singh, Herbert G. Kasler, Davide D’Amico, Julia Rey, Lucía Alcober-Boquet, Johanna M. Gorol, Christoph Steup, Ritesh Tiwari, Ryan Kwok, Rafael J. Argüello, Julie Faitg, Kathrin Sprinzl, Stefan Zeuzem, Valentina Nekljudova, Sibylle Loibl, Eric Verdin, Chris Rinsch, Florian R. Greten

Urolithin A

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Aging Anurag Singh Chris Rinsch Christoph Steup Davide D’Amico Dominic Denk Eric Verdin Florian R. Greten Frank Bernier GLICO Health Hematology Hemostasis Hemostasis Today Herbert G. Kasler Immune Aging Immunology Johanna M. Gorol Julia Rey Julie Faitg Kathrin Sprinzl Lucía Alcober-Boquet Medicine Rafael J. Argüello Ritesh Tiwari Ryan Kwok Sibylle Loibl Stefan Zeuzem thrombosis Urolithin A Valentina Nekljudova
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