Liz Parrish

Founder & CEO, BioViva Sciences

Elizabeth (Liz) Parrish, MBA, is the Founder and CEO of BioViva Sciences USA Inc., a biotechnology company based on Bainbridge Island, Washington, that is developing and licensing gene therapies to slow and reverse biological aging. She is widely recognized as "Patient Zero" — the first human being in history to undergo gene therapy specifically designed to combat the hallmarks of aging, a distinction she earned in September 2015 when she flew to Bogotá, Colombia, and received two experimental therapies: one targeting telomere lengthening via telomerase activation (hTERT), and a second inhibiting myostatin to counteract age-related muscle loss. That decision, made secretly and without informing her own family, became one of the most discussed acts of self-experimentation in modern biotech history. Parrish's path into longevity science was not academic — it was personal. In 2013, her son was diagnosed with Type 1 diabetes, and the encounter with standard medical care left her unsatisfied. She began attending scientific conferences, including the SENS Foundation's sixth biennial conference in Cambridge, England, where she engaged directly with researchers like Harvard geneticist George Church. She recognized that the science of gene therapy was far ahead of its clinical deployment, that therapies proven in animals had not been given a path to human trials at any reasonable pace, and that the regulatory and financial architecture of medicine was actively delaying treatments that could save lives. She decided to build the company that would push these therapies forward. BioViva Sciences was founded in 2014, and within a year Parrish had made herself its first patient. The results she has reported from her own case are striking. Prior to the 2015 treatment, her biological age (measured via T-lymphocyte telomere length) registered at the equivalent of a 66-year-old — 22 years older than her chronological age. Six months after treatment, telomere length had increased by approximately 20 years, from 6.71kb to 7.33kb, as measured by SpectraCell Laboratories and independently reviewed by HEALES and the Biogerontology Research Foundation. She repeated the gene therapy in 2020, after which her biological markers declined again. As of her 55th birthday, she reports her epigenetic age is approximately 33 and her telomere-based biological age registers in the 20s. Beyond her own case, Parrish has built BioViva into a global licensing and research platform. The company has developed a proprietary CMV-based gene therapy delivery platform alongside AAV vectors, and is developing therapies targeting telomere extension, follistatin (muscle preservation and performance), and klotho (cognitive enhancement). BioViva has worked with Rutgers University and holds patents in AAV-based gene therapies. Parrish has also structured access through offshore licensing partners, making therapies available in countries including Mexico, Colombia, the Bahamas, and Honduras at a fraction of US costs, while simultaneously building nonprofit pipelines to treat patients — including those with childhood diseases — at no charge. She has disclosed a pipeline in Switzerland focused on putting Type 1 diabetes into remission using patients' own genetically modified cells. Parrish is a founding member of the International Longevity Alliance and an affiliated member of the Complex Biological Systems Alliance (CBSA), a Mensa-based scientific platform. She was formerly Secretary of the Board of the Regenerative Technology Alliance and Chief Marketing Officer at RNAx Ltd., an RNA therapy company. She has spoken at the WIRED Health conference in London, delivered a TEDx talk titled "Gene Therapy to Engineer Healthy Longevity," and has been profiled by the BBC World Service, Outside Magazine, Forbes, MIT Technology Review, Vice, and Wired. She is a vocal critic of the pharmaceutical subscription model, arguing that long-duration gene therapies — which can maintain protein expression for 10 to 15 years — represent an existential challenge to chronic disease drug economics, and that the United States' position as the world's most heavily medicated country while maintaining the shortest lifespan among industrialized nations is not a paradox but a consequence of a broken incentive structure.

Key Insights from Liz Parrish

It's a first experiment in the world with these gene therapies in this combination. And eight months later, my husband read it in Wired magazine and that's when we decided to have the conversation.

— Liz Parrish on Patient Zero: the first human gene therapy for aging

Short telomeres are associated with all the diseases of aging and when your cells can no longer divide it's because these caps get too short — and then you're pretty much done.

— Liz Parrish on Telomere biology and the mechanics of aging

About two months after the gene therapy, my telomeres were lengthened by 20 years and they continue to lengthen. I redid the gene therapy in 2020 and they lengthened significantly again.

— Liz Parrish on Results: telomere lengthening and biological age reversal

The United States is the most prescribed country in the world and we have the shortest lifespan of all the industrialized countries. We're 5% of the population. We use 80% of the pills.

— Liz Parrish on The failed paradigm of prescription medicine

The gene therapies will last in your body for 10 to 15 years before the protein expression goes down. So this is more of a set it and forget it and get back to your lifestyle.

— Liz Parrish on Gene therapy vs. the pharmaceutical subscription model

I mean, a lot of people look at this technology and say, is this playing God? But they don't really take into their mind what open heart surgery is. If we can start to just by an IV injection infuse you with genes that keep you from having to have your chest opened up — this is really beautiful medicine.

— Liz Parrish on Ethics of gene therapy and reframing 'playing God'

We are the only company in the world not only to offer these therapies, but to get nonprofits behind us and get people treated for free. So we do try to meet the unmet need of people who could not otherwise afford these therapies.

— Liz Parrish on Accessibility and the cost barrier in gene therapy

Skeptics shut people down because what they tell you is — I don't have to read, I don't have to learn about it. We are slowing and reversing aging in animals all the time. We need to do it in humans. Science was made for humans. It was made for people, especially people who are sick.

— Liz Parrish on The moral case for scientific boldness and the cost of skepticism

Notable Quotes from Liz Parrish

Short telomeres are associated with all the diseases of aging — when your cells can no longer divide it's because these caps get too short. And then you're pretty much done.

— Liz Parrish

The United States is the most prescribed country in the world and we have the shortest lifespan of all the industrialized countries. We're 5% of the population. We use 80% of the pills.

— Liz Parrish

What are we going to show our children? Do we just show him that we give up and bake cookies and take insulin — or do we go do something to change the world?

— Liz Parrish

Frequently Asked Questions about Liz Parrish

What exactly did Liz Parrish do in 2015 and why does it matter?

In September 2015, at age 44, Liz Parrish flew to Bogotá, Colombia and received two experimental gene therapies developed by her company BioViva: one targeting telomerase activation (hTERT) to lengthen telomeres, and a second inhibiting myostatin to counteract muscle loss. The procedures, administered through over 100 injections in a single clinic session, had never been combined in a human before. She did it because these therapies had shown compelling results in animal models but faced no near-term path to US clinical trials, and she believed the ethical cost of waiting — measured in lives — exceeded the risk of self-experimentation. The results, independently verified by HEALES and the Biogerontology Research Foundation, showed her telomeres had lengthened by the equivalent of 20 years within six months, making her case the first documented evidence of telomere reversal in a living human via gene therapy.

What are telomeres and why does lengthening them matter for aging?

Telomeres are the protective caps at the ends of every chromosome — often compared to the plastic tips on shoelaces. With every cell division, they shorten slightly. When they become critically short, cells enter a state called senescence (they can no longer divide safely), which drives the accumulation of dysfunction across tissues and organs that we experience as aging and ultimately as end-stage diseases like cancer, heart disease, and dementia. Parrish explains it plainly: 'Short telomeres are associated with all the diseases of aging and when your cells can no longer divide it's because these caps get too short.' The gene therapy she received activates telomerase, the enzyme that adds length back to telomeres, temporarily reversing this clock. BioViva has measured her T-lymphocyte telomere length at multiple points over nine years, using three independent labs, and consistently observed lengthening following each treatment.

How much does BioViva's gene therapy cost and who can access it?

US-approved gene therapies for aging-related conditions run from two to seven million dollars. BioViva operates through offshore licensing partners — in Mexico, Colombia, the Bahamas, Honduras, and Switzerland — where regulatory frameworks allow access at a fraction of those costs, though Parrish acknowledges therapies remain 'cost prohibitive' for most individuals. The company has also structured 'buyer clubs,' in which groups of patients pool costs to access a single licensed therapy round at a substantially lower per-person price. Parrish is emphatic that cost reduction is central to her mission: 'I am here to create affordable therapies for the world.' BioViva also supports nonprofit partnerships that fund treatment for patients — including those with childhood diseases — at no charge.

What is Liz Parrish's biological age today and how is it measured?

As of age 55 (chronological), Parrish reports her biological age as approximately 33 by epigenetic markers, and in the 20s by telomere length as measured in T-lymphocytes. BioViva uses three independent labs for testing. She is careful to note that different markers produce different readings, and she is openly critical of current biological age measurement as a complete framework: 'The future human is going to register very differently than how we mark aging today.' She views low CRP (C-reactive protein), stable metabolic markers, and upregulated regenerative signaling as the more meaningful indicators of her therapy's effectiveness, alongside the disappearance of the aches, limitations, and recovery difficulties that characterized her condition before treatment.

Why isn't BioViva conducting FDA-approved clinical trials in the United States?

Parrish has addressed this question repeatedly and her answer is both strategic and principled. Operating as a private company outside US jurisdiction gives BioViva the mobility to conduct first-in-human studies and license therapies offshore while US regulatory timelines for novel gene therapy remain measured in decades. She points out that BioViva was able to treat herself, conduct the first gene therapy study in human dementia, and mobilize licensing deals precisely because it was not constrained by public-company governance or US FDA pre-approval requirements. She is also developing what she calls a 'Best Choice Medicine' regulatory model that would create a more efficient approval pathway for genetic therapies. Parrish does not oppose regulatory oversight — she supports it — but argues that the current pace of FDA approval for gene therapy imposes a death toll that regulators do not account for: 'If we have the treatment for aging right now, it would be an act against humanity if you don't put these treatments forward.'

What is the connection between Liz Parrish's work and her son's Type 1 diabetes?

Parrish's entry into longevity science was triggered by her son's 2013 Type 1 diabetes diagnosis. Encountering a medical system that could manage the disease but not cure it, she channeled her urgency into genetics research — attending conferences, engaging with scientists, and ultimately founding BioViva. Every gene therapy BioViva targets, she says, is also designed to address a childhood disease. On the show she revealed a specific pipeline: BioViva is currently working with a research center in Switzerland to put Type 1 diabetes into remission using patients' own stem cells, genetically modified and returned to the body. 'I found it took longer, but we are creating the first pipeline to a patient's own cells, putting type 1 diabetes in remission — it took all of these years to find the right doctors, the right research centers that believed in me.'

Interview with Liz Parrish — Topics Covered

  1. Center Stage introduction: the woman who secretly flew to Colombia (~3 minutes)
  2. The secret that lasted eight months: husband, Wired magazine, and the conversation (~4 minutes)
  3. Telomeres explained: the shoelace metaphor and the biology of cellular aging (~5 minutes)
  4. The data: before and after measurements, three labs, and 20 years of biological reversal (~4 minutes)
  5. Data vs. feelings: how BioViva separates signal from noise in experimental medicine (~4 minutes)
  6. Cost, access, and the offshore model: buyer clubs, nonprofits, and the price of hope (~5 minutes)
  7. Playing God vs. beautiful medicine: the ethics of gene therapy for aging (~3 minutes)
  8. Peter Attia, Bryan Johnson, and the longevity influencer landscape (~4 minutes)
  9. The son, the diagnosis, and the promise in the hospital room (~4 minutes)
  10. The Shark Tank loneliness clip and closing thoughts on belief, critics, and the future (~3 minutes)

Liz Parrish — Areas of Expertise

  • Gene therapy for biological aging and longevity
  • Telomere biology, telomerase activation (hTERT), and cellular senescence
  • Follistatin gene therapy and muscle preservation
  • Klotho and cognitive enhancement via gene therapy
  • PGC1-alpha, mitochondrial function, and metabolic optimization
  • Self-experimentation ethics and N-of-1 research methodology
  • Offshore clinical access and international gene therapy licensing
  • Pharmaceutical disruption and the economics of chronic disease
  • Biomarker measurement: epigenetic clocks, telomere testing, and CRP
  • Type 1 diabetes and childhood disease gene therapy pipelines
  • Biotech entrepreneurship and private-company regulatory strategy
  • The International Longevity Alliance and global longevity advocacy

Watch: She Injected Herself With Gene Therapy to Reverse Aging

Full Center Stage interview with Liz Parrish on Mornings in the Lab.

Watch on YouTube

Liz Parrish — Show Appearances

  • Mornings in the Lab (2026-02-11)

Liz Parrish — Signal Brief

Signal Score: 62/100

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