How I Beat Lyme Disease with The Ketogenic Diet — Science, How-To Protocols, and 10+ Years of Zero Symptoms

I’ve had Lyme disease twice, and I’m now 100% asymptomatic. The second case in 2014 was incredibly severe, but it was resolved in 4–6 weeks with an unorthodox but defensible approach: strict ketosis.

The post How I Beat Lyme Disease with The Ketogenic Diet — Science, How-To Protocols, and 10+ Years of Zero Symptoms appeared first on The Blog of Author Tim Ferriss.

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Tim Ferriss

January 30, 2026

How I Beat Lyme Disease with The Ketogenic Diet — Science, How-To Protocols, and 10+ Years of Zero Symptoms

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Topics: Writing and Blogging

I started writing this as a reply on X to Greg Yang, co-founder of xAI, who recently stepped down from xAI to address his debilitating case of Lyme disease.

Ultimately, I decided that a blog post could provide more detail and allow proofreading by credible researchers, so here we are.

Before we dive in, a disclaimer: I’m not a doctor, nor do I play one on the internet. I was hesitant to publish this, as I know how much flak I’ll get, but the results and underlying science are just too interesting.

The following is for informational purposes only. Please consult with your doctor and read the warnings at the end.

TABLE OF CONTENTS

**My Story
Salvation through Starvation?
Energy Production
Anti-Inflammatory Effects
Metabolic Psychiatry
How to Get Started + Future Non-Diet Options + Warnings
Additional Resources**

MY STORY

Growing up on Long Island (see this link), I’ve contracted Lyme disease twice. Most of my childhood friends and neighbors have had tick-borne diseases. My second case of Lyme in 2014 was incredibly severe, but it was resolved in 4–6 weeks with an unorthodox approach: strict ketosis. I’ve now been 100% asymptomatic for more than 10 years.

I have since replicated the results with four out of four friends who were effectively disabled by Lyme disease. In this post, I’ll cover some of the science, simple how-to instructions, lots of open questions, and upcoming tech options that might offer some benefits of keto in a headset, no diet required.

Am I saying the ketogenic diet will work for everyone? Of course not. I am saying that, compared to a lot of complex or questionable treatments for Lyme, ketosis might be a simple “first, do no harm” approach with minimal downside for most people. Drugs often have off-target effects, and we’ve scientifically studied ketosis for more than 100 years.
Furthermore, ketosis has been a mainstay of human evolution for millennia. So perhaps it’s worth testing for a few weeks to see if you’re a responder? Lots of caveats with this, but I’ll unpack it.

Let’s begin with my personal case.

As mentioned, I twice contracted Lyme disease and co-infections on Long Island, confirmed with local testing, best-of-class lab testing in NYC, and lastly with specialists at the Stanford Infectious Diseases Clinic. I mention the three separate rounds of testing, as a lot of people are misdiagnosed with Lyme.

Many conditions have similar symptoms to Lyme disease, including Long COVID, Fibromyalgia, Chronic Fatigue Syndrome (CFS/ME), Multiple Sclerosis (MS), and Rheumatoid Arthritis (RA). Disambiguating takes proper testing from legitimate MDs, in my opinion.
There are simply too many charlatans and well-intentioned amateurs running around.

I had no rash in either instance, which is true in 20–30% of cases. Unfortunately, I believed the local folklore of “no rash, no Lyme” and, in the 2014 instance, I waited until symptoms were debilitating: severe joint swelling, slurred speech, forgetting common words and friends’ names, etc. I didn’t seek proper help until my assistant said, “Tim, I’ve seen you tired, I’ve seen you sick, and this is something else. You need to see a doctor.”

So, I did. Sadly, after proper diagnosis and courses of antibiotics, which I still believe are critical, most symptoms persisted. I operated at ~10% capacity for 9 months and was on the verge of accepting that my mind, body, relationships, business, and more might be handicapped forever. I felt like I had advanced dementia, fatigue often kept me bedridden, and arthritis-like pain wracked my entire body.

What happened at 9 months?

I started brainstorming subtraction. I’d already tried addition: adding drugs, supplements, and all manner of sketchy “alternative” options. If anything, some of them seemed to be generating more problems.

This is how I returned to the ketogenic diet.

Fortunately, I’d used the ketogenic diet in college for various sports experiments, and I decided to test whether or not picking a new fuel and harnessing anti-inflammation (more on these later) would improve things. I knew I could get into clinical ketosis within 3–4 days.

Within a week, all of my cognitive symptoms were gone.

After roughly 4–6 weeks of a strict ketogenic diet (<20 grams of carbohydrates per day), I completely and durably fixed all of my symptoms. It’s been more than a decade, and none of the symptoms have returned. It was a Hail Mary that worked.

And here is perhaps the most surprising part—I didn’t need to stay on the ketogenic diet. I went back to the slow-carb diet after 4–6 weeks of keto, and my diet has varied tremendously since. Whatever it did seemed to stick.

But there was one rub.

I had no satisfying explanation for why it worked.

I had a few plausible theories, sure, but nothing watertight. I knew the short-term effects of ketosis… but a durable fix? How was that possible?

The lights went on in late 2025 when I again interviewed Dr. Dominic D’Agostino, one of the world’s leading researchers and synthesizers of ketones.

Let’s start with the biggest missing piece he provided.

SALVATION THROUGH STARVATION?

Lyme disease spirochetes (Borrelia burgdorferi) are largely dependent on glycolysis for energy production, as they lack a tricarboxylic acid (TCA) cycle and oxidative phosphorylation pathways. In simple terms, the bacteria that cause Lyme disease primarily use carbohydrates for fuel. I had no idea and simply got lucky.

But is it really as simple as starving the bacteria out?

This might not apply to all cases, as such spirochetes can also use alternate fuels like glycerol and pull off all sorts of evolved tricks. LLMs seem to raise an eyebrow at the above theory, but we have at least an N (sample size) of 5 with a 100% success rate. It’s not a Randomized Controlled Trial (RCT), but a lot of compelling science starts with a few interesting case studies.

This glycolysis-dependent piece of the puzzle seems to be critical, but might there be alternate explanations for why keto seems to work? A few possibilities come to mind, and perhaps they synergize to produce the “remission” I and others experienced.

Below are a few leads.

ENERGY PRODUCTION

A ketogenic diet (KD) has a host of fascinating effects on mitochondria, the so-called “powerhouses” of the cell that generate most of your energy (ATP). This was one of my placeholder theories in 2014, as researchers started exploring this terrain seriously in the 1990s.

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