Keyto

Keyto offers a personalized weight loss program that focuses on a low-carb, high-fat diet. The program is designed to help users lose weight effectively without experiencing hunger. It includes a 16-week course that provides a personalized lesson plan, access to a searchable food database, meal plans, recipes, and a members-only podcast. This comprehensive approach aims to educate users on core dietary principles and support them in making sustainable lifestyle changes.

A key feature of the Keyto program is the Keyto Breath Sensor, which analyzes a user's breath to determine whether they are burning fat or sugar for energy. This device helps users track their progress and ensures they are on the right path to achieving their weight loss goals. According to the company, 98% of users in their trial lost weight using the device.

Additionally, Keyto provides access to a team of experts, including a goal specialist, dietician, and personal trainer, to offer individualized support. This expert guidance, combined with the program's educational resources, aims to empower users to reach and maintain their health goals effectively.

A randomized trial found that the Keyto app and breath acetone biofeedback device led to greater weight loss than a low-fat calorie-restricted app in adults with overweight or obesity. The research also supports breath acetone as a useful marker for monitoring ketosis and suggests that biofeedback can help with adherence in a structured diet program. The evidence is about the combined program, not the standalone device as a medical treatment.