One letter for readers.One for builders.
The Longevity Letter is where I think through health claims in public. The CareCore Stack is for the people turning health products into real care.
The Longevity Letter
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Subscribe and get the Supplement Stack: the short list of supplements that still earn their place once I check the evidence and safety data. Then stay for the weekly note, where I work through new studies and the claims I would not take at face value.
- —Studies worth changing your mind over
- —Free download: The Supplement Stack (PDF)
- —How I read labs, symptoms, and risk
- —What I would start, stop, or ignore
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The CareCore Stack
Notes from building care
A note for founders, clinicians, and operators building health products with real medical consequences: clinical workflows, regulation, unit economics, and where glossy products fall apart.
- —Clinical workflow patterns
- —Regulation and reimbursement friction
- —Unit economics behind real care
- —Notes from building CareCore
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CareCore Stack
Builder notes are next. Subscribe above if you want the working notes on clinical product, operations, and care infrastructure.