Klotho: The Longevity Hormone You've Never Heard Of | Age-Less Top 20 Peptides
From The Science of Age-less Living by Dr. Ethan Hausman-Marquis
May 27, 2026 · 22 min · Season 2 · Episode 9
About this episode
This episode explores the Klotho protein and its significant role in longevity and ageing processes.
Klotho was discovered in 1997 when a disrupted gene caused mice to develop every hallmark of premature ageing within weeks — osteoporosis, arteriosclerosis, muscle wasting, cognitive decline — and die at a fraction of their expected lifespan. The inverse experiment extended lifespan by twenty to thirty percent. The protein was named after Clotho, the Greek Fate who spins the thread of life. It remains one of the most studied proteins in longevity biology nearly three decades later. In this episode, Dr. Ethan Hausman-Marquis examines Klotho from the ground up: the critical distinction between transmembrane α-Klotho and its circulating shed form sKlotho; how the FGF23 co-receptor mechanism explains the accelerated ageing phenotype of Klotho deficiency; what five separate longevity-associated pathways — including IGF-1/PI3K suppression, Wnt/β-catenin inhibition, Nrf2 antioxidant activation, and TGF-beta fibrosis suppression — suggest about why this protein matters so broadly; and why circulating Klotho levels decline by approximately 40 percent between the ages of 40 and 80. The human evidence is examined honestly: what the large prospective cohort studies actually show, what the…
People in this episode
Host: Dr. Ethan Hausman-Marquis
Topics covered
- longevity
- Klotho
- ageing
- health
- biological mechanisms
- neurodegeneration
Keywords
- Klotho
- longevity hormone
- ageing
- health
- biological pathways
- cognitive decline
- interventional data
Mentioned in this episode
Organizations: Cell Reports
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