Triggers & intolerances
These guides share tagging tips, cross-links to personas, and gentle experiments. They keep the language cautious and transparent.
Start with a question
Pick the question that matches what you’re seeing.
Why am I suddenly lactose intolerant?
The “sudden” part often has a reason. Look for dose, timing, and trigger stacking.
Read the guideHow do I find my trigger foods?
A simple 7-day method that avoids cutting everything at once.
See the methodWhat foods change stool consistency?
10 common “usual suspects,” plus how to test one lever at a time.
Read the guideWhat are the signs of gluten intolerance?
Common symptoms people attribute to gluten, plus what else can look similar.
Read the guideHow to test for gluten intolerance
A careful way to test a gluten/wheat hypothesis without changing everything at once.
See how to testCommon triggers
Short, practical guides you can test week-to-week.
Caffeine
Track espresso timing, second cups, and Type 6 days after early caffeine hits.
Read the caffeine guideSweeteners & polyols
Sugar-free isn’t always gut-free. Stacks can act like laxatives for some people.
Read the sweeteners guidePoop pattern decoder
The fastest way to get unstuck is to track one variable and watch the timing window.
- • Timing window: 0–4h vs 4–12h vs next morning
- • Bristol type + urgency (especially morning patterns)
- • Confounders: caffeine timing, polyols, alcohol, sleep, stress
Guides
- • 10 foods that affect stool consistency (and why they work)
- • Caffeine: does timing matter?
- • Carrot salad and elimination diets: what to track before you commit
- • Eating late? You're giving your microbiome jet lag
- • Ferments and “fibermaxxing”: how to ramp without wrecking your gut
- • Fiber: how to increase without bloating
- • Fibermaxxing: the truth about mega-dosing fiber
- • Food safety while traveling or eating out
- • Gut microbiome: what it is, why it affects your stool, and what to do first
- • How to identify your trigger foods (without cutting everything)
- • How to test for gluten intolerance
- • HRV and gut health: the stress-digestion connection biohackers miss
- • Lactose intolerance test: breath test vs a 7-day check
- • Sweeteners and polyols: why sugar-free can trigger gut issues
- • What are the signs of gluten intolerance?
- • Why am I suddenly lactose intolerant?
- • Why your gut gets weird after Christmas (and how to get back to normal without a “detox”)