reset“Does it work?” needs a more specific question: work for which outcome, compared with what, for whom, and over how long? A fasting routine can be studied for weight, glucose measures or other outcomes, and the answers are not interchangeable.
A timer cannot predict those outcomes from hours alone.
Start with the comparison
A 2022 randomised trial of 139 adults with obesity compared calorie restriction with and without an eight-hour eating window over 12 months. Adding the eating window did not produce a statistically significant advantage in weight loss over calorie restriction alone.
That finding addresses a particular intervention and comparison. It does not establish that every fasting pattern has no effects, or that everyone will experience the same result.
Look at what else changed
When reading a study, check whether participants also changed calorie intake, food choices, activity or support from professionals. If several things change together, avoid attributing every outcome solely to the timing window.
Also check the population. A trial involving adults with a particular condition does not automatically establish suitability for children, pregnancy or people using different medications.
Separate a study result from an app promise
Reset has not demonstrated that using its timer causes weight loss or treats a condition. It records timing and presents general educational material.
A 100% target-completion rate only means the recorded sessions met their targets. It says nothing about calorie intake, nutritional adequacy or a measured change in health. Read what completion means before using that figure as an outcome.
Use evidence for a conversation, not a countdown
The NIH overview of fasting research explains why researchers distinguish meal timing from other dietary changes and why clinical advice matters.
Discuss your intended outcome and circumstances with a qualified professional before changing how you eat. Do not extend a fast because a result has not appeared by a promised number of days.
This article is educational, written by the makers of Reset, and has not been medically reviewed. It explains how to interpret claims; it does not offer a personalised weight-loss or treatment plan.