Last week I sat down with Dr. Bill Andrews, and I think it might be the most important hour I've recorded since starting this project.
The full video is coming soon. Here's who he is and what we covered, so you know why you should block out the time.
Who Is Dr. Bill Andrews?
Bill Andrews has been trying to cure aging since he was ten years old, when his father asked him whether he'd be interested in solving it. He's almost 75 now and still in the lab every day.
He runs Sierra Sciences. He holds more than 50 patents, and he was a key inventor on human growth hormone, tissue plasminogen activator, Betaseron and erythropoietin — drugs that are in hospitals right now. He was National Inventor of the Year for his cancer research. He co-starred in the documentary The Immortalist, which made the Academy's top ten for documentary in 2014.
He also held the world speed record for barefoot water skiing, and the record for the most hundred-mile ultramarathons run in a single year. I'm 71 and I felt lazy sitting across from him.
If you want to understand aging at the mechanical level — not the supplement-influencer level, the actual biology — he is arguably the best explainer alive.
What We Talked About
A preview of what's in the interview:
- Why telomeres actually shorten — and why the shoelace analogy everybody repeats is wrong. His bricklayer explanation finally made it click for me.
- The ride ticket math. You get 100 tickets as a single-cell embryo. Bill told me how many you have left by the time you're born, and the number genuinely stopped me cold on camera.
- The hard ceiling. There's a maximum human lifespan you cannot exceed no matter how perfect your protocol is. He says what it is and why.
- How to spot a fake telomere product. This is the most useful thing in the whole hour. There's one question you can ask any company selling telomere support — and Bill says if they can't answer it, their product may be accelerating your aging. I'd never have known to ask.
- Telomerase and cancer. Everybody assumes lengthening telomeres causes cancer. Bill argues the exact opposite, and his reasoning is airtight.
- What Bill Andrews takes himself — his actual daily stack, including one thing he says most people are wasting their money on.
- The price tag on curing aging. He named a dollar figure and a timeline. Both are smaller than you'd think.
- Liz Parrish, gene therapy, and the fight to let dying people try treatments that haven't cleared the FDA.
Why This One Matters to Me
I'm 71. My whole bet is that I can stay sharp and functional long enough to reach the wave — the point where science starts adding years back faster than I lose them. Aubrey de Grey calls it longevity escape velocity. Dr. Terry Grossman puts it better: live long enough to live forever.
Bill Andrews is one of the handful of people on earth actually working on the thing that decides whether that bet pays off. And he gives nearly all of it away for free.
Thanks to Liz Parrish for putting us together. If you haven't watched her episode yet, start here.
The Video Is Coming Soon
Keep an eye out — I'll post the full interview here and on my YouTube channel shortly. Subscribe so you don't miss it.
Everything I track is public and free at GaryLeland.com.
A note from Gary: I'm not a doctor, and I'm definitely not your doctor. Nothing here is medical advice. Check with your doctor before you copy anything I do.
Stay sovereign, stay healthy.
Your chronological age is just the calendar — how many birthdays you've had. Your biological age is how old your body actually behaves, and the two can be wildly different. Two 71-year-olds can be a decade apart on the inside depending on inflammation, metabolic health, organ function, and dozens of other markers.
For decades, dentistry and medicine operated in separate silos. Your dentist handled your teeth. Your doctor handled everything else. That model is now officially obsolete.
Studies link it to:
Your circadian rhythm—the 24-hour internal clock governing sleep, hormones, metabolism, and repair—is primarily set by light exposure. Morning sunlight, especially the mix of red/orange wavelengths at dawn and the blue light spike as the sun rises, signals your suprachiasmatic nucleus (SCN) in the brain that it's daytime. 
At 70 years old, charging full speed toward my goal of living to 200 with The 200 Year Life Project, I've learned that the simplest metrics often reveal the biggest truths about health. Grip strength—the force you can generate with your hand muscles—has become one of my obsessions. It's not just about crushing a handshake; research shows it's a powerful indicator of overall health, frailty, and even lifespan in seniors like me.
Grip strength is often called a “biomarker of health status” because it reflects your overall muscle function, which ties into everything from mobility to metabolic health. Measured with a dynamometer (that's the device I use), it gauges how much force your hand can apply—typically in kilograms or pounds. For seniors, low grip strength is a red flag for accelerated aging, higher chronic disease risk, and shorter lifespan. 
1. Cardiovascular Health and Longevity
You must be logged in to post a comment.