Eighteen months, no clinic.

I spent $400 to be told what to do.

It was a functional medicine consult in the spring of 2024. I’d been chasing the same set of symptoms — fatigue that didn’t match my sleep, skin that wasn’t behaving, the sense that something was slightly off in a way that doesn’t show up on a standard panel. I’d done the bloodwork. I’d done the thyroid panel. Everything was “in range.” I’d been told, more than once, by people with framed credentials on their walls, to maybe try yoga.

The functional medicine clinic was a step up from yoga. The intake was thorough. The labs were extensive. The walk-out plan was a $1,500-a-month supplement and lifestyle protocol with seventeen different products, three of which I had to order from a German wholesaler.

I sat in my car in the parking lot and did the math. Eighteen thousand dollars a year. To take a regimen that, when I looked at it line by line, was about 60% things I could have found in a single Reddit thread.

I went home and read the research instead.

Eighteen months later I’d built a method. I’d used AI — first ChatGPT, then Claude, then a rotation of both — to read the abstracts I didn’t have time to read, to compare protocols against each other, to argue both sides of a claim until I could see which side actually had the receipts. I’d run the audit on my own labs. I’d rebuilt my own supplement stack from scratch. I’d arrived at most of the same conclusions the $1,500 plan would have given me, plus a few it never would have. For the cost of an AI subscription.

The playbooks are what came out the other side. The 3 AM Reset is the first one most readers buy. The Lab Decoder, the Skin Reset, the HRT Decision Map, the Strength Protocol, and the Supplement Audit are the other five minis. Three parent playbooks pull them together by domain: The AI Wellness Audit, The Skin Stack, and Build Your Protocol. The Library Bundle is all nine for $179.

That’s the whole story. I’m not selling a supplement line. I’m not running a coaching program. I’m not building a community of seekers. I’m writing playbooks, picking products that earn their place on a recommendation page, and pointing you at your own doctor for anything that involves a prescription pad.

If that sounds like the kind of operator you want to read, you’re in the right place.

— Kathryn

Kathryn Crosby · Build Your Protocol

What I am, what I’m not.

Where I draw the line on what I’ll publish.

• —Nothing prescription. That work belongs to your doctor. Full stop.
• —Nothing I haven’t actually used or read on. Every recommendation is either in my rotation or has been studied carefully enough that I can defend the choice in writing.
• —Nothing from a brand whose research I can’t find. If the brand can’t produce a study or a clear ingredient rationale, it doesn’t earn the page.
• —Nothing that requires you to ignore your clinician. The method is built to make you a better patient, not to replace having one.
• —No refunds. Chapter 1 of every playbook is free. Sample the voice and the method before you spend a dollar. If the free chapter doesn’t earn you, the rest won’t. All sales final.

Podcasts, mentions, hits.

Coming as the playbooks roll out. Journalists, podcasters, and editors — the press kit lives at the link below.