Podbit · The Peter Attia Drive
At 31, roughly one-third of blastocysts are chromosomally abnormal. By 38, it's 60%. By 42, more than 80%. The curve is not linear — it accelerates. Most doctors don't show patients this table, but every woman thinking about timing her family should.
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At 1:01:40 · chapter starts 1:01:24
Renato Tomioka shifts the conversation to one of the most underappreciated facts in reproductive medicine: the non-linear rise in chromosomal abnormality with maternal age. [1] — Renato Tomioka "~35% aneuploidy at age 31–34: At ages 31 to 34, approximately one-third of blastocysts are aneuploid; the rate climbs to 40% by 35, 60% by …" 1:02:00 The curve is not what most people imagine — it is J-shaped, with aneuploidy rates actually higher in very young women (around 20, due to monosomy) than at 25, which represents the biological sweet spot. From 25, the rate climbs: roughly 35% at 31 to 34, 40% at 35, 60% at 38, 70% at 40, and more than 80% by 42. Almost all embryo aneuploidy (93 to 95%) originates from maternal meiotic errors, not sperm. Peter visibly reacts to these figures — he had not thought of 31 as a compromised reproductive age. Tomioka reframes IVF: it does not improve egg quality, it simply converts more ovulatory events into observable embryos. A 40-year-old who produces 8 eggs per cycle — typical for that age — will, after the successive filters of maturity, fertilization, blastocyst development, and aneuploidy screening, often be left with zero or one viable embryo to transfer. He also notes an important nuance: once you transfer a euploid embryo, implantation rates are broadly similar across ages 30 to 40, suggesting it is aneuploidy that primarily limits fertility, not other intrinsic egg qualities.
At ages 31 to 34, approximately one-third of blastocysts are aneuploid; the rate climbs to 40% by 35, 60% by 38, and over 80% by age 42.
AI nailed Andrew Huberman's vertigo-vs-low-blood-pressure diagnosis because that pattern has been reported millions of times. But every patient's liver is different and data on liver surgeries is scarce worldwide — making solo robot surgery dangerous. The rule is simple: data abundance means AI can help; data scarcity means keep the human in the loop.
Fei-Fei Li's father had liver surgery performed by a da Vinci robot guided by a surgeon. The result: 10 times less blood loss than a typical procedure. This isn't replacement — it's the gold standard of human-machine collaboration, where the human's judgment and the robot's precision combine.
US drug overdose deaths fell from 110,000 to roughly 70,000 — the biggest CDC-recorded single-year drop ever. Men's rates fell 27% in one year, and the steepest decline of all was among 15–24-year-olds, down 37%. The crisis narrative around young men needs to make room for signs of genuine progress.
Kessler thought his grief expertise would protect him. It didn't. When his son David died unexpectedly, he found himself on the floor — and eventually realized that acceptance alone wasn't enough. That unmet need became the sixth stage: finding meaning.
Grief isn't just death — it's any unwanted change. Kessler lectured at Coca-Cola and General Mills not because they had lots of funerals, but because change management is grief management. People who grieve well live well.
Witnessing someone's grief isn't just emotional support — it's an essential act of healing. Kessler argues grief is a severance and connection heals it. But real witnessing has two steps: seeing the pain AND affirming the person's capacity to recover.
Avoiding grief isn't free — it's exhausting. Kessler's beach ball metaphor nails it: pushing a small balloon down is easy, but holding a massive beach ball underwater takes constant, draining energy. Unattended feelings don't disappear; they just consume you.
Most people try to control their environment to avoid triggers. Kessler flips this entirely: triggers aren't problems to manage around — they're a detailed map to your pain and your healing. Every trigger points directly to what needs attention.
Running from pain doesn't leave it behind — it accelerates the chase. Whatever we run from pursues us, and whatever we face transforms us. Both Kessler and Lewis Howes testify to knowing both roads firsthand.
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