James walks through how he built a custom GPT that knows his blood work, health goals, and red lines — and how it recently told him to stop taking glycine.
In this episode, you'll see:
- How to build a custom GPT that acts as your personal supplement advisor
- A prompting technique that compensates for gaps in your own knowledge
- Why stacking similar supplements can work against you (and how AI catches it)
- How to design 8-12 week experimental review protocols with pass/fail criteria
- When to default to your doctor and when AI is the better prep tool
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 deep-dive
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
Resources
ChatGPT Custom GPTs: https://chatgpt.com
Randox Health: https://www.randox.com
GlyNAC: https://examine.com/supplements/glycine/
Ashwagandha: https://examine.com/supplements/ashwagandha/
Yeast Beta-Glucan: https://examine.com/supplements/beta-glucan/
Urolithin A: https://examine.com/supplements/urolithin-a/
Website: https://healthstacks.ai
#supplements #ai #health #customgpt #biohacking #healthstacks
