We Can Now Drive Aging Forward and Backward at Will — Here's What That Means | Impact Theory W. Tom Bilyeu Dr. David Sinclair

Dr. David Sinclair and Tom Bilyeu discuss the cutting edge of aging science, beginning with brain organoids — miniature brains grown in the lab that Sinclair's team uses as aging models. These organoids, when given aging genes like APOE4, become dysfunctional faster. The team can then apply chemical cocktails (three molecules, two of which humans have already safely consumed) or OSK genes to reverse the aging of these mini brains, observing restored neural firing through calcium signaling under microscopes. Ethical questions arise around whether these organoids can experience consciousness, and Sinclair acknowledges they monitor them for signs of activity.

Sinclair describes growing other organoids including uteri to study and potentially reverse female fertility decline. He references prior research showing that raising NAD levels via sirtuin activation restored egg production in elderly female mice. A recent human study on IV NAD suggested promising results for female fertility. Growing full 3D uteri in the lab is still early-stage, but the goal is to eventually help post-menopausal women regain fertility — either through direct uterine rejuvenation or via surrogate and healthy eggs.

A major highlight is Sinclair's optic nerve regeneration work, which earned a Nature cover. His team used OSK gene therapy to regrow optic nerves in mice blinded by laser — achieving 100% nerve regrowth where previous studies had only achieved ~5%. This works via an age-reversal mechanism that resets epigenetic information back to a youthful state. The same mechanism cleared protein buildup in the retina (lipofuscin) and may have implications for spinal injuries, ALS, and nerve-muscle junction degeneration in older adults. Sinclair says this works in monkeys and gives the technology an ~80% chance of success in humans.

The team has also identified a three-chemical cocktail (not yet publicly named) that, when given orally to old mice for four weeks, improved performance across ~20 tests of strength, memory, and balance. Sinclair is developing consumer-facing natural versions of these molecules through a company called Paradigm 88, co-founded with his partner Serena. These may appear as drinks, creams, or supplements targeting skin and hair rejuvenation, with hair regrowth and de-graying as key near-term goals. They are already growing human skin organoids in the lab and testing age reversal on them.

Sinclair discusses the information theory of aging — the idea that aging is caused by loss of epigenetic information (methylation patterns), not genetic information per se. He explains that a backup copy of the epigenetic program exists in cells and can be restored. This is distinct from genetic mutations, which are harder to reverse and represent a longer-term scientific challenge. He notes that some organisms like certain desert plants maintain near-perfect genomic information and live thousands of years, suggesting that radical longevity is biologically possible.

For near-term predictions, Sinclair says human clinical data on age-reversal eye therapy could be public within a year, which he calls a 'ChatGPT moment for biology.' In 20 years, he expects multiple organ rejuvenation to be achievable, with individuals potentially looking decades younger. He acknowledges we are at 'Wright Brothers' stage — the biology works, but full-body de-aging pills are still years away.

On personal health protocols, Sinclair takes: 1 gram NMN daily, 1 gram resveratrol (dissolved in olive oil or yogurt for absorption), and berberine (a natural metformin alternative) to lower blood glucose. He recently added natokinase for cardiovascular health and niacin (B3) to address elevated Lp(a) lipoprotein levels, which he attributes to Ashkenazi Jewish heritage. He has been on a statin since age 29 due to family cardiovascular history. He eats ~95% plants, drinks matcha daily, avoids alcohol, and practices intermittent fasting. He also emphasizes stress reduction, box breathing, deep sleep (which clears Alzheimer's-related proteins), avoiding sugar, not smoking, and getting up and moving regularly. He cautions that his full protocol requires doctor supervision and is not appropriate for everyone.

Sinclair also shares that he recently had skin cancer removed from his face despite lifelong sun avoidance, underscoring that genetic predisposition can override lifestyle precautions. He advocates for full-body MRI scans, cancer blood tests, and genomic profiling to catch diseases early, while noting these are adjuncts rather than definitive diagnostics.