James Grant shows the custom GPT he built to review supplements against his blood tests and health goals, including why it suggested he stop taking glycine.
In this episode
- Building a custom GPT with blood tests and health goals
- Asking the GPT to clarify missing information
- Spotting overlap between supplements
- Setting review periods and criteria
- Preparing questions for a doctor
Timestamps
- 00:00 Introduction
- 00:30 HealthStacks show intro
- 01:06 Origin story -- the scatter-gun approach before AI
- 02:10 Why experimentation loops matter
- 03:21 Key principle: start with goals, not supplements
- 04:02 Screen share: building the Custom GPT
- 06:19 Three health goals explained
- 08:25 System instructions
- 08:57 Prompting technique: "ask me clarifying questions"
- 10:14 Getting started advice for beginners
- 14:17 Case study: why James removed glycine
- 17:10 "Top 5 interventions" live demo
- 18:17 Role prompting: specialist vs. generalist
- 21:34 Results walkthrough
- 24:08 Building a full daily stack with dosing schedule
- 27:04 The future of the supplement industry
- 29:13 Failures: when the same AI gives conflicting advice
- 30:34 Final stack review
- 32:50 Wrap-up and takeaways
Links
This episode is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or treatment. AI tools are decision-support aids, not replacements for professional medical guidance.