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Key to Health (Keyto) is a weight management program that combines a breath acetone sensor, an AI agent, and a Mediterranean-inspired dietary approach to help users understand and improve their metabolism. The program is backed by peer-reviewed clinical research, including a published randomized controlled trial and a real-world evidence study covering more than 11,000 adults.
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About Keyto
Founded
2018
Product type
Breath sensor, AI coaching app, and dietary program
Clinical evidence
Published RCT in Obesity journal, mediation analysis in JMIR mHealth, 1-year follow-up in Obesity Science and Practice
Real-world study size
11,365 adults (under peer review)
Weight loss outcome
Approximately 10% total body weight loss at 48 weeks in published RCT
Target audience
Adults seeking metabolic weight management, employers, and health plans
AI agent
KEY, available 24/7 for personalized metabolic guidance
Dietary approach
Mediterranean-inspired
Key to Health operates in the premium digital health segment, targeting adults who want a science-based approach to weight management rather than calorie-counting apps or medication alone. The product is also positioned toward employers and health plans looking to offer scalable, evidence-backed weight management to their populations. What distinguishes Key to Health is its use of breath acetone biofeedback, a biomarker of fat metabolism, combined with an AI coaching agent called KEY that provides personalized metabolic guidance around the clock. The company was founded by physicians and engineers who hold themselves to pharmaceutical-grade evidence standards, including pre-registered analyses and peer-reviewed publication.
Active promotions
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Discounted annual subscription rate for employers or health plans that enroll a minimum number of members in the program.
Example promotion
This is an example of a promotion that could suit this business. It is not a guaranteed active offer or a working discount code. Check the website for current deals.
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Keyto in the news
Recent updates and background about Keyto, summarised in our own words.
KEYTO Group expands home inspection services in Sweden
KEYTO Group has added Inspect Group to its portfolio, extending its presence in the Swedish home inspection market. The move broadens the range of inspection services the group offers in that region.
Minister highlights youth awareness as key to protecting natural resources
A minister has stated that raising environmental awareness among young people is essential for the long-term preservation of natural resources. The remarks emphasize the role of education and engagement in addressing environmental challenges.
A personal account of trying the keto diet with a tracking device
A writer tested the ketogenic diet, which has gained popularity in technology circles in Silicon Valley, with the assistance of a dedicated tracking gadget. The experience offered a firsthand look at how such devices can be used to monitor dietary progress.
Summaries by Image Review based on publicly available sources and our own editing. External links may contain affiliate links.
What others ask about Keyto
Answers to the most common questions, based on search behaviour and our own research.
Is Key to Health a reliable and scientifically validated program?
Key to Health has published its clinical results in peer-reviewed journals, including a randomized controlled trial in the journal Obesity conducted at the University of British Columbia with independent biostatisticians and public funding from the Canadian Institutes of Health Research. The company states it presents evidence honestly, including limitations, and does not guarantee individual results.
How does the Key to Health breath sensor actually work?
Users exhale into the Generation 2 handheld sensor, which measures acetone in the breath as a real-time indicator of whether the body is burning fat or sugar. This biofeedback is sent to the KEY AI agent, which provides personalized dietary and metabolic insights based on the measurement.
Can Key to Health be used alongside GLP-1 medications like Ozempic or Wegovy?
Yes, the program is explicitly designed to complement GLP-1 receptor agonist therapy. Key to Health positions itself as useful before, during, and after medication use, with the goal of building lasting dietary habits that reduce the risk of weight regain after discontinuation.
Is Key to Health intended for individual consumers or only for employers?
The program is marketed both to individual adults seeking weight management and to employers and health plans looking for scalable solutions for their populations. The AI-driven model means it can serve large groups without requiring additional coaching staff.
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