Podbit · The Peter Attia Drive
One patient cleared her brain amyloid and then subsequently showed no tau on a tau PET scan — a response Gayatri Devi describes as so remarkable she 'refuses to believe' the pathology is gone. Another patient, an identical twin of a facility-dwelling Alzheimer's patient, did so well on monoclonal therapy despite having a mechanical heart valve and being on Coumadin.
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At 1:12:20 · chapter starts 1:03:30
The mechanism of ARIA becomes clinically concrete in this segment: anti-amyloid antibodies clear amyloid not just from brain parenchyma but also from the tunica media (walls) of small brain arteries. This removal disrupts vascular continuity, causing first fluid leakage (ARIA-E, edema) and then extravasation of actual blood (ARIA-H, hemorrhage); in severe cases with concurrent blood thinners, the result can be fatal [1] — Gayatri Devi "Anti-amyloid antibodies clear amyloid not just from brain substrate but also from the walls of small brain arteries. This disrupts vascular…" 1:03:30 . Gayatri Devi's response is systematic: all patients undergo regular MRI monitoring, and in over five years of practice she has only encountered one case of symptomatic ARIA — all other cases were detected on imaging alone. For patients with persistent ARIA-E, she preemedicates with steroids before each subsequent infusion, borrowing from the treatment approach for spontaneous cerebral amyloid angiopathy-related inflammation. One dramatic case — a APOE4 homozygous man who developed significant ARIA-E and microhemorrhages at month 18 without any symptoms — illustrates both the risk and the importance of radiographic surveillance.
Anti-amyloid antibodies clear amyloid not just from brain substrate but also from the walls of small brain arteries. This disrupts vascular integrity, causing fluid leakage (ARIA-E, edema) and then actual blood extravasation (ARIA-H, hemorrhage). In severe cases with blood thinners or large vessel disruption, it can be fatal.
Despite years of liberal monoclonal antibody use, Gayatri Devi has seen only one case of symptomatic ARIA; all other cases were detected only on MRI.
Self-help fails because people are sold one universal cure by the hyper-responders who had a transformative result from it. The real problem is context: every method works for the right person at the right time, which is almost never you just because the author says so.
Spencer Greenberg was once so socially anxious his heart pounded just approaching a stranger. His therapist gave him homework: go to a bar alone, talk to 5 strangers. Starting with asking for the time, he worked up to asking men for hugs — and his anxiety fell dramatically in 6 months.
A person who flies regularly but obsessively checks weather forecasts before every flight is not doing exposure therapy — they're teaching their brain that flying is only safe with the ritual. Safety behaviors prevent the brain from ever learning that the feared thing is actually fine.
The worry-time technique assigns all worries to one scheduled slot (e.g. 5 PM). Every time a worry surfaces, you write it down and ban yourself from engaging with it until that time. When 5 PM arrives, most worries feel trivial and the act of batch-worrying exposes how little it actually accomplishes.
In a randomized study of 20 habit techniques, 'habit reflection' stood out: recall a past habit you successfully built, write down what helped you succeed, then apply those same strategies to your new habit. It works because it's self-adapting — it uses whatever worked for YOU.
The tiny habits technique — always having a minimal version of your habit you can do when life gets in the way — keeps the mental machinery of habit formation from breaking. Paradoxically, people given a tiny-habit fallback option were MORE successful at the full habit, not less.
Fears and worries act like playground bullies — they want to ambush you. But when you deliberately seek them out and choose the time of engagement, they lose their power. The volitional act of starting the fight on your own terms is one of CBT's most underappreciated insights.
Most downtime defaults are things you regret immediately after — phone scrolling, binge TV. 'Glad you did it' activities meet the same need for rest but leave you feeling like you spent your time well. The switch from a bad screen to a documentary, a book, or a walk costs almost no extra effort but compounds into identity over time.
You rarely control your first reactive thought. But you can train your second thought — the response to the trigger — by asking whether your initial reaction is the most helpful one and replacing it with something equally true but more constructive. Over time, that second thought becomes automatic.
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