Biotracking, Age Reversal & Other Advanced Health Technologies | Lifespan with Dr. David Sinclair #8
In a Nutshell
David Sinclair outlines the shift to proactive health via wearables (CGM, BioButton), blood tests (InsideTracker, GRAIL for early cancer/heart detection), and future nanosensors/AI for continuous biomarker tracking (glucose, inflammation, cortisol), enabling personalized nutrition, exercise, and supplementation to optimize biological age. Epigenetic reprogramming with OSK Yamanaka factors and chemical cocktails (TRIIM trial) reverses aging in mice (restoring vision, tissues) and humans (2-10+ years via Horvath clock), promising lifespan extension beyond 100 with safer delivery methods imminent. Monitoring and lifestyle now add years; longevity tech will slash healthcare costs, boost productivity, and allow multi-career lives, peaking population then declining.
These notes were generated by AI and may contain inaccuracies.
Welcome to the Lifespan podcast discussing the science of aging and how to be healthier at any stage of life. David Sinclair is a professor of genetics at Harvard Medical School and co-director of the Paul F. Glenn Center for Biology of Aging Research. This final episode of the eight-part series covers the near future of technologies to greatly extend lifespans. Joined by co-host and co-author of "Lifespan", Matthew LaPlante.
Predictions from the book "Lifespan" arrived faster than expected: telemedicine with doctors and home medicine delivery, now possible thanks to the pandemic, even without drones. Pandemic exposed inflexible pre-pandemic systems, accelerating changes for 21st-century needs. Pushback on self-managed healthcare has diminished; now home tests and blood tests for almost anything are available remotely, with doctors involved but without office visits. Future: rarer doctor visits, mostly remote, often with unknown prescribing doctors. People dislike doctor visits; home monitoring is better, avoids infections in waiting rooms and hospitals, especially risky for older people.
Can't impact what you don't measure. Discussion on wearables, implantables, and scaled access to biological aging clocks to change health approaches.
Sponsor: Levels - App syncs with continuous glucose monitor (CGM) provided, interprets glucose data. Sinclair joined as scientific advisor. Monitors blood glucose to see food effects (e.g., white rice spikes Sinclair's blood sugar, potatoes don't). Stable blood glucose important for energy and long-term health. Try at levels.link/sinclair, skip 150,000-person waitlist.
Sponsor: Athletic Greens - All-in-one daily greens drink with 75 vitamins, minerals, whole food ingredients, adaptogens, probiotics, prebiotics, digestive enzymes, vitamin C, zinc citrate. Sinclair drinks it mornings, especially when traveling. Offer: athleticgreens.com/sinclair for five free travel packs, year supply of vitamin D3 and K2 (keeps calcium in bones, out of arteries).
Sponsor: InsideTracker - Personalized nutrition from blood and DNA data. Sinclair uses for over a decade, chairs scientific advisory board. Easy blood draw at clinic or home. Analyzes data simply; offers inner age test Sinclair helped develop, compares biological to chronological age, suggests improvements. Visit insidetracker.com/sinclair for 25% off with code Sinclair.
Current healthcare: wait until sick, then see doctor - made sense in 19th/20th centuries when doctors relied on in-person exams. Now, biosensors, home blood tests give more info than office visits.
Anecdote: Sinclair's 10-minute video consult after a year - doctor asked how he feels/sleeps, advised more sleep, no tests needed without symptoms. Sinclair pushed for prostate cancer test (PSA test) at age 52, despite no family history or symptoms; doctor initially refused, saying need symptoms or large tumor first. Sinclair called it craziness - too late by then.
New tests like GRAIL (finger prick or clinic blood) detect 50 cancer types before tumors form, via blood analytes (signals from cancer cells: proteins, DNA, RNA fragments with DNA methylation patterns, enzyme-cut ends identifying e.g., stage one liver cancer). Catches issues early, before metastasis. Applies to heart disease too via early warning signals.
Cancer survival improving (breast, lung), but new blood tests for circulating DNA will reduce incidence/deaths by catching small tumors for early chemo. Heart disease via blood tests (InsideTracker inflammatory markers); future additions measure heart function.
Sinclair wears BioButton (1-inch chest device): monitors 1,000 times/second for vibration, speech, cough, movement, sleep, but mainly heart (FDA-approved EKG, like doctor stickers or watches). Used to send heart patients home post-attack/surgery, saves hospitals money ($20 device). Future: monitor at-risk people early, establish normal rhythm, alert on changes.
Future alert system: device notifies doctor/nurse scanning millions (like Minority Report), e.g., "David's heart and kidneys issue"; doctor intervenes, sends robot.
Both wear Levels CGM on arms. Competing on lower blood sugar; pre-recording identical. Meals show differences: rice/grapes spike Sinclair's, potatoes less. LaPlante learned more in a week than lifetime; non-diabetic but changes food choices to avoid spikes. Like bathroom scales - measuring leads to improvement. Right to monitor bodies; some doctors oppose non-diabetics using CGMs (needs prescription now, pending safety studies).
Analogy: bathroom scales not just for obese. History of glucose monitoring: 1962 first blood measurement, 1973 benchtop analyzer (fridge-sized), now wearables (watches, needles). Future: stickers measuring hundreds continuously.
Personalize biomarkers by genetic profile, disease propensity, gene methylation. Consult doctor/advisor on what to watch (now glucose widespread; soon others). Doctor anecdote end: capitulated on PSA (Sinclair clear), loved InsideTracker data.
Medical system/insurance not set up for pre-symptomatic tests (not covered unless diseased). Australia: free beach sunblock, free colon cancer stool tests for all, saves billions. US: pay out-of-pocket, worth it. Doctors receptive if insured.
LaPlante's old-school doctor will see Levels data next week for informed talk. Body dashboard needed like car dashboard - measure to catch issues early. Reduces cancers (e.g., colon), heart attacks (predict days ahead), even depression/anxiety via devices/typing. Typing patterns detect Alzheimer's/Parkinson's; home movements too.
Current products: glucose monitors, lactate, body fat/muscle mass, ECGs, caloric intake, temperature, UV, sleep quality, blood oxygen.
Sinclair's top 5 continuous biomarkers:
- Glucose
- Heart function (already doing)
- CRP (C-reactive protein, inflammation predictor of cardiovascular disease)
- TNF-alpha, IL-1, IL-6 (inflammation, longevity predictors)
- Cortisol (stress, overexercise); also lactate (exercise handling), blood oxygen (hypoxia hormesis)
Near future: wearables/semi-implantables (painless needles like Levels). Further: nano biosensors (Sinclair tested prototypes, not commercial; measure skin analytes including glucose). Companies like Levels developing for hundreds of markers.
Nanosensors use chemical reactions and antibodies to detect proteins, DNA, methylated DNA. Implanted under the skin, they last for months, recharged wirelessly with a coil on the hand for minutes. Could stay in body for life.
Everybody should have a biosensor in their body at every age for parents and doctors to monitor and make better decisions about food and lifestyle.
Massive data from self-tracking will be incomprehensible without AI to process noise and find signals. Data uploaded to cloud, likely companies like Amazon, Google, Apple health divisions, or startups. Concerns about government access in some countries.
Data is massive: terabytes per person, multiplied by billions. Issues: storage, ownership, anonymization, HIPAA protection. Need rules before data sharing, including right to delete data. Many agreements lack this. In discussions with senators and Congress people. Rules needed now, within next few years.
Genetic data consent affects family (parents, children). Relatives' DNA in databases impacts you.
Golden State Killer case: 13 murders, 50 rapes, 150 burglaries. Hair without roots yielded enough DNA via Ed Green and team at Australian company. Tracked relative in public database, triangulated to identify and arrest him.
Public databases used voluntarily by relatives enable this. Same tech could be dangerous if government targets dissidents or journalists. Laws must prevent nefarious use by dictators or government changes.
Health data affects others via infectious diseases. Well-meaning government could track contagious virus spikes via biomonitors on millions. COVID era example; worse for deadly viruses like Ebola.
Big decisions on privacy vs. collective good. Bigger pandemic coming in our lifetimes, as in Lifespan. Arc Bio company detects viruses, fungi, bacteria in blood or spit samples without prior knowledge. Pulls out human DNA, analyzes pathogens left. Used for COVID monitoring, now in patients.
Current wearables: blood glucose monitor, ring for sleep/heart rate/movement, watches for heart/movement/exercise, chest sensor (soon commercial), InsideTracker blood draws. Enables health improvements via data.
Future: contact lenses for blood glucose, tooth sensors for mouth bacteria, Viome gut tests (Naveen Jain CEO) for health/supplements/colon cancer (better than market). Eventually home toilet devices. Poop sent by mail now (swab or jar with liquid).
Other biosensors: mouth guards for concussion markers in youth athletics (saliva/blood), temporary tattoo biosensors, sweat microfluidic biosensors for hormones, lactate, uric acid.
Athletes monitored like Formula 1 cars. Continuous monitoring thousands of times per second from every age makes sense to detect heart attacks, cancer early, adding decade to lifespan beyond lifestyle changes.
InsideTracker used for decade; biological age spiked at 48, reduced to 31.4 via lifestyle, NMN, Metformin.
Methylation clocks expensive, time-consuming (weeks/months). New TIME-Seq method (Sinclair, Griffin, bioRxiv paper) 1,000x cheaper. Cheek swab at home soon via new company. Sign up at doctorsinclair.com waitlist for experiments on slowing/reversing aging.
Combine with microbiome, blood analytes, wearables for daily decisions.
Levels app shows blood sugar impacts, compares foods. InsideTracker nutritional recommendations (e.g., salmon for vitamin D, recipes). Phone apps suggest supermarket buys, restaurant meals.
Monitor biological clock weekly, analytes daily, heart rate. Directs: vitamin D deficiency → eat fish; high cortisol → reduce stress/meditation/lighter exercise.
Apps distill terabytes into simple daily steps. Even if eating right, flags deficiencies. Vegans/vegetarians need B12, NAD. Recommends brands.
Future: home poly pill machine mixes minerals, vitamins, medicines daily (Daniel Kraft's Stanford company, countertop device). Personalized by weight, genome, diet, time of day, sex. Current medicine based on averages, ignores history/genetics/biological age.
AI assists customers more than doctors now.
Wearables track heart rate, heart rate variability (high good), resting heart rate (low good). Apps optimize: run map for good weather, rest if high cortisol, weights instead.
Siri as personal trainer/guardian angel for health. Annual physicals will seem medieval.
No one-size-fits-all; measure what works (genetics, physical/mental differences). Page 304 of book lists Sinclair's routine, not universal.
Mice get exercise benefits from NMN, but best with exercise + NMN. Not excuse to be sedentary. Need for elderly/post-heart attack/kidney failure: pills/IV deliver benefits.
Best now: eat right, move right, supplement based on monitoring.
Greg Fahy trials (with Steve Horvath): 2 years age retreat in 12 months via three factors (prior episode). Early days; reports of 10-20 years reversal. Golden age for aging research; beyond slowing to reversal.
Epigenetic reset: Gene therapy turns on three embryonic youth genes in adult animals and human cells.
Genes OCT4, SOX2, and KLF4 (OSK) are transcription factors that bind to DNA and turn on genetic programs. These are three of the five Yamanaka factors discovered by Shinya Yamanaka (Nobel Prize 2016), which reprogram adult cells to pluripotent stem cells (age zero). Full set risks tumors, so OSK combination resets tissue age without cancer risk.
Delivered via virus to mouse eye (also whole body possible). Restored vision in mice with optic nerve damage, glaucoma (affects millions worldwide), or old age blindness. After 4 weeks, retinal nerve cells reset age per Horvath clock, gene expression normalized, vision restored—cured blindness.
TEDS enzymes (control DNA methylation) required for clock reset and vision restoration, confirming clock is part of reset system.
Nature cover story, December 2020: "Turning Back Time" with eyeball clock image.
$20 billion raised for aging reset research. Scientists mimicking with small molecules, plant compounds, or existing drugs for future pill or cream to reset body age in 5-10 years.
Restores vision in mice with retinal or macular degeneration. Skin reversal in humans and mice. Mini-brains (organoids from human skin) given Alzheimer's, reset age, regained electrical activity—potential for brain reversal, eliminating Alzheimer's, heart disease, cancer.
Gene therapy turned on/off with doxycycline antibiotic for 4-8 weeks. Measure vision restoration, stop antibiotics. Ages out in ~decade, repeat with mailed antibiotics.
Greg Fahy's TRIIM Trial (California): metformin, growth hormone, DHEA. Growth hormone rebuilds tissues (signals good times); metformin/DHEA prevent glucose spikes/diabetes. After 1 year, Horvath clock in blood reset 2.5 years younger.
If repeated yearly/every 2 years, "you're immortal."
Unclear if blood-only or whole-body; need skin clocks, other biomarkers. Fahy reports repeats work: 5 years, some 10 years blood age reversal.
Unknown long-term safety/repeatability. Risk: over-rejuvenation stimulates cancer. Optimism: younger body improves immune surveillance, kills cancer (aging weakens this). Don't try gene therapy at home—irreversible, virus immune responses possible.
Gene delivery challenge: uneven distribution limits whole-body lifespan extension in mice. New companies improving even infection; expect mice living decade or two (from normal 2 years).
Mouse to 10-20 years implies humans past 100/120 years, into unfathomable territory—longer, healthier lives.
Population peaks at 10-11 billion then declines (wealth/health reduce offspring: US, South America, Africa). Longer lives boost productivity, cut costs. US spends 17% GDP on late-life healthcare.
Economic value: +1 year lifespan (e.g., metformin) = $86 trillion to US economy long-term; +10 years = $365 trillion (Nature Aging). Frees money for education, climate change.
Lengthen productive life: education ~25% of life (first 20 years), ~40-year career, 20 years sick. Extension improves education ROI.
Skill-batical: 2-3 years paid time off for career changes. Multiple opportunities in longer life.
David Sinclair's father: left career at 67 expecting 10 bad years; now 82, healthier/stronger than son, new career in 70s.
Live healthy to 80s-90s+: contribute wisdom to kids/grandkids/great-grandkids. Waste to die at 80-100.
People over 40-50 have cared for sick elders—huge burden (costly, time-consuming, emotionally draining). Live long/healthy to avoid burdening family; statistics show quicker death.
Right and obligation to live long/healthy.
No instant pills yet. Recipe to reach 80-100+: right diet, less frequent eating/fasting periods, multiple exercise types, hormesis (cold/heat stress), supplements, monitoring tech.
Longer you live, longer you will live: +1 year now adds 3 months; soon 6 months/year, eventually 1 year/year.
Show notes timestamped for review. Credits: researchers Sarah Ryan, Adiv Johnson; producer Rob Mohr, assistant Jack Jameson.
Future: deeper dives (fertility, sexual performance, aging/sex/society, blood glucose, women's fertility). Viewer feedback decides season 2 (5-star Apple reviews, comments).
Longevity/wellness/performance in your hands today; unimaginable tech soon.
Baseline understanding of aging research enables future deep dives.
Share episodes, subscribe (YouTube, Apple Podcasts, Spotify), 5-star Apple reviews, check sponsors, Patreon: patreon.com/davidsinclair.
Aging not just late-life focus, but daily for better health/longevity.
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