Want GLP-1? Try Key to Health first and get your first month free.
Apply for Key to Health's free GLP-1 Pathway Pilot. Start with the Key to Health breath sensor program to establish your baseline. If you still want GLP-1 afterward, we'll cover your first month of medication if clinically appropriate.
Start with Key to Health. First month of GLP-1 covered if you still want it.
The Key to Health GLP-1 Pathway Pilot is a free program for people actively considering GLP-1s. Start with the breath sensor program to establish your baseline and see how your body responds — then decide whether you still need the medication.
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Apply
Tell us about your weight-loss goals and whether you're considering GLP-1 medication. It takes a couple of minutes.
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Start with Key to Health
We send you a Key to Health breath sensor and give you access to the app. Use the program to establish your metabolic baseline and see how your body responds.
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Decide if you still want GLP-1
After the pilot, you decide whether you still want medication. No pressure either way.
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Get your first month covered
If you still want GLP-1 and are clinically appropriate, we'll help you access treatment and cover your first month.
What you get
- ✓Free Key to Health breath sensor
- ✓Free access to the Key to Health app program
- ✓Weight and progress tracking
- ✓Simple check-ins with the Key to Health team
- ✓A GLP-1 access pathway at the end
- ✓First month of medication covered if you still want it and qualify
What we ask of you
- →Use the breath sensor during the pilot
- →Track your weight along the way
- →Complete the pilot program
- →Decide at the end whether you still want medication
Medication is only provided if clinically appropriate after review by a licensed clinician. Completing the program does not guarantee a prescription. This is not medical advice.
Your breath reveals how your body burns fat
When the body breaks down stored fat for energy, acetone appears in exhaled breath. Key to Health measures this biomarker in real time — creating a feedback loop between dietary choices and metabolic outcomes that builds lasting habits.
Breathe
Exhale into the Gen 2 sensor. In seconds, see your current metabolic state — whether your body is burning fat or sugar.
Learn from Key AI
Key AI, your personal AI agent, analyzes your measurements, behavioral patterns, and context to give you personalized metabolic insights 24/7.
Build lasting habits
Real-time feedback reinforces healthy choices. You develop intuition about what works for your body — knowledge that persists long-term.
Proven in a randomized controlled trial
We hold ourselves to the same evidence standards used to evaluate pharmaceuticals: randomized controlled trials with independent oversight, pre-registered analyses, and peer-reviewed publication.
Randomized controlled trial — University of British Columbia
155 adults randomized to Key to Health vs. WW (an evidence-based active comparator, not placebo). Independent biostatisticians, publicly funded by the Canadian Institutes of Health Research.
Weight loss sustained at 48 weeks without additional intervention. Published mediation analysis confirmed biofeedback engagement drove outcomes through behavior change. Results consistent at scale in a real-world study of 11,365 adults (under peer review).
The details, straight up
Everything you'd want to know before you apply for the pilot.
What is the GLP-1 Pathway Pilot?+
It's a free program for people actively considering GLP-1 medication. You get a Key to Health breath sensor and app access, use the program to establish your baseline, and then decide whether you still want a GLP-1. If you still want medication afterward, we cover your first month if it's clinically appropriate.
Do I really get my first month of GLP-1 covered?+
Yes — if you complete the pilot, still want a GLP-1, and are found clinically appropriate by a licensed clinician. Completing the pilot doesn't guarantee a prescription; that's a clinical decision.
Why try Key to Health before starting a GLP-1?+
GLP-1s can be effective, but not everyone needs to start medication immediately. Key to Health shows you whether your body is burning fat in real time using a simple breath sensor, with daily feedback — so you can see how your body responds before deciding whether medication is still right for you.
What do I have to do during the pilot?+
Use the breath sensor during the pilot, track your weight along the way, and complete short check-ins. We'll walk you through each step in the app.
Is Key to Health clinically proven?+
Yes. In a randomized controlled trial published in Obesity, participants lost about 10% of body weight at 48 weeks — 2.2× the comparator at 12 weeks. Results held in a real-world study of 11,365 adults.
Who is eligible?+
The pilot is for adults considering GLP-1 medication who want to lose weight, are willing to try the breath sensor program first, and can use a breath sensor most days. Apply above and we'll follow up about next steps.
Apply for the free pilot
Spots are limited. Tell us a little about yourself and we'll follow up about next steps.
Who this is for
- ✓Are considering GLP-1 medication
- ✓Want to lose weight
- ✓Are willing to try the breath sensor program first
- ✓Can use a breath sensor most days
- ✓Are open to a device-first approach
Thanks for applying!
We've received your application for the free GLP-1 Pathway Pilot. Spots are limited — our team will review your details and follow up by email about next steps.