I built a 3-stage AI bot that reads Sinclair, Lustig & Ede's books for me — now I query it at the grocery store
I've been reading David Sinclair, Robert Lustig, and Georgia Ede for the past year — finish each book feeling like my entire worldview just shifted, then three months later I'm standing in a supermarket holding some "heart healthy" granola bar completely blanking on what any of them actually said about seed oils or fructose or whatever. The knowledge was in my head somewhere, just not in any useful retrievable way. So I built a three-stage Dify pipeline to fix it — question goes in, hits a RAG knowledge base loaded with all their books as PDFs (Fat Chance, Metabolical, Hacking of the American Mind, Lifespan, Change Your Diet Change Your Mind) plus YouTube interview transcripts from Huberman, Rogan, Lex Fridman and Peter Attia, then DeepSeek synthesizes an answer that actually tells you which book or interview it's pulling from instead of just vibing a response at you.
And honestly? The grocery store use case alone made the whole thing worth building. I'll literally be standing in an aisle typing "this has canola oil and maltodextrin, what would Lustig and Ede say" or "oat milk vs whole milk, what do all three think" and get a proper sourced answer in seconds. But the thing that actually surprised me was how much these three experts disagree with each other — Sinclair wants you eating less red meat because it fires up mTOR, Ede thinks organ meats are basically brain superfoods, two brilliant scientists landing on completely opposite plates — and the bot just lays both arguments out honestly instead of picking the safe middle-ground answer. That part genuinely changed how I engage with health information. Adding Attia's Outlive and Chris Palmer's Brain Energy next. Happy to drop the system prompt in the comments if anyone wants it.
