Brandon Christie

You know you're onto something when one simple post in a chronic illness Facebook community group turns into this... Random people pulling others in, answering others' questions, helping each other figure out how to download @Jettyhealth . So much need. So much opportunity to do better.

Does everyone say that drivers in their own city are the worst? I’ve had people tell me this in every city that I’ve lived in.

@blakeir I’m feeling that as well at Jetty. Though our users who want to log symptoms while doing things e.g. cleaning the house prefer voice in, voice out.

voice in, text out feels like the most natural interface right now

Just stumbled upon that Linkin Park + Jay Z crossover album from 2004 incredible...has there been anything like that since? #tbt

App Store reviews for Jetty are starting to come in— “Got rid of my notebook… bringing this to my rheumy visit” (Ankylosing Spondylitis) “Show up to appointments with real stats… connections I never would’ve caught” (POTS) Goal: help people show up prepared + see patterns they couldn’t alone. Still early. Very proud.

Living with autoimmune disease isn’t about controlling every variable. It’s about understanding how your body responds to stress so you can support recovery.

Autoimmune disease is more common than many realize & you likely know someone living with one. Conditions like MS, type 1 diabetes, lupus, rheumatoid arthritis, psoriasis, Crohn’s disease & alopecia are all autoimmune diseases, along w/ nearly 140 others. autoimmune.org/autoimmune-awa…

@myautoimmunemd @myautoimmunemd So hard to keep track & remember all of this as a patient. Excited to be making this easier using @Jettyhealth.

When someone walks into my clinic, I don’t start by asking when the pain started. I ask something else... When did your recovery start taking longer? When did mornings begin feeling heavier? When did your baseline energy drop?

@patrickc Spot on @patrickc. Left NEA to build this into an engaging AI-native, voice-based consumer app @Jettyhealth. Benefit to users so far has been better understanding their conditions & advocating for themselves with doctors. Will keep you in the loop.

Observing some people close to me with chronic health conditions, it's striking how useful Reddit frequently ends up being. I think a core reason is because trials aren’t run for a lot of things, and Reddit provides a kind of emergent intelligence that sits between that which any single physician can marshal and the full rigor of clinical trials. Why aren’t trials run for a lot of things? Well, they’re of course slow and expensive (median cost of $19M for a pivotal trial in 2015[1]; after adjusting for inflation and other phases, maybe that corresponds to a total of $40M today?). But they’re also hard to fund when the intervention in question lacks IP protection since the ensuing knowledge can’t be monetized. As such, trials for diet, over-the-counter supplements, and lifestyle interventions are under-pursued. To give one prosaic example, lots of people think that magnesium improves sleep, but, as far as I know, no trial has ever been run assessing its ability to improve sleep in non-elderly adults without sleep disorders. So, Reddit — in a pretty unstructured way — makes a limited kind of “compounding knowledge” possible. Best practices can be noticed and can imperfectly start to accumulate. For people with chronic health problems, this is a big deal, and I’ve heard lots of stories between “I found something that made my condition much more manageable” all the way to “I found a permanent cure in a weird comment buried deep in a thread”. (Of course, one also sees this outside of medical conditions. I’ve enjoyed the recommended routine in the BodyWeightFitness subreddit, as a comparable kind of distilled practical wisdom[2].) An interesting and somewhat more formalized example of this approach was recently used for long COVID and published earlier this year[3]. After surveying 3,900 individuals, the paper analyzes patient-reported outcomes for 150 different treatments, yielding the figure reproduced below. There are evidently no silver bullets, but it is striking that, say, about half of people find that antihistamines are helpful. I know a number of people who found the learnings from this study to be impactful in improving their daily quality-of-life. Seeing this paper and the Reddit experience makes me wonder whether the approach could somehow be scaled: is there a kind of observational, self-reported clinical trial that could sit between Reddit and these manual approaches? Should there be a platform that covers all major chronic conditions, administers ongoing surveys, and tracks longitudinal outcomes? I don’t really know what the best way to go about this would be, but it feels to me that there could be something important here. There’s a lot of latent data in patients’ subjective experiences that is not today being properly gathered or analyzed.

@goodfellow_ian @daniel_rossett Glad to hear this @goodfellow_ian. Excited to better document these journeys via @Jettyhealth.

I'd like to thank @daniel_rossett for his help in my recovery from the POTS version of Long COVID. Daniel was key in bringing me back from highly disabled and suffering to being able to do what I want to again. This X account is mostly focused on ML / AI. From that point of view, many of you know that in December 2024, I wasn't able to do the test of time award talk at NeurIPS, even by video call. Daniel started working with me in March 2025. By April, I started to have days of no POTS symptoms, by June I was off all heart rate lowering medications, by September I was back to work. I'm back to full exercise, running, lifting weights, mountain biking, and have even done things I hadn't done before I got sick, like riding Whistler Mountain Bike Park. I'm now getting the word out to help Daniel build a company that will bring this approach to more people.

@OzTheMentalist 1) We’d been working in silence for four hours. At 4 PM, Lifetime Fitness staff set “happy hour” cocktail menus on the communal coworking desks. Everyone exchanged glances: “Isn’t this supposed to be a health gym?”

I’ve been tracking the moments when people snap out of autopilot. @OzTheMentalist framed it like this: you’re in an elevator, it breaks, and suddenly everyone is present. What creates those moments? How do you make your own elevator “get stuck”?

We’re early, well-resourced, and building long-term. Jetty is now live on the App Store and helping real users. If this resonates - we’re hiring founding software engineers (see link in bio).

That’s why we built Jetty. An AI-native health companion that turns daily symptoms + lived context into usable insight - so people can see patterns and show up to their doctor with clarity.

Levothyroxine. 35 years ago, my mom was prescribed it for her thyroid. She’s still taking it. She always will be. 🧵

Someone recently asked me the most surprising thing about having kids. It’s the empathy. You suddenly connect with your aunts, uncles, store clerks, bank tellers, colleagues...anyone who’s been there. Shared experience is so powerful.