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Clinical Trial Summary

LIMITFOOD2 is a randomized clinical intervention study that investigates the effects of two different intermittent fasting protocols compared to a control group on the health of obese adults. A total of 90 participants will be randomized into three equally sized groups: a modified alternate day fasting, a time-restricted eating and a control group, receiving general weight-loss counseling.


Clinical Trial Description

The prevalence of overweight and obesity worldwide has risen considerably in the past century with more than one billion overweight persons, and about 600 million obese patients in 2015. Humans in modern societies typically eat at least three main meals per day and snacks around the clock. This change in eating pattern in terms of quantity and frequency leads to overconsumption of food and consequently to excess weight. Furthermore, obesity increases the risk of developing diabetes, cardiovascular disease and several types of cancer. The world health organization (WHO) has stated that there are 2.8 million deaths per year as a result of overweight and obesity. In recent years, the concept of re-introduced fasting intervals in the form of intermittent fasting (IF) protocols became a popular alternative dietary strategy with the aim to achieve weight control and improve metabolic health. There are several different IF protocols, the most popular is time-restricted eating (TRE), which allows ad libitum (at one's pleasure) energy intake within a defined time period each time (6 to 12 hours). Another IF protocol is alternate day fasting (ADF), on 'feast days' one can consume food ad libitum, while on 'fast days' no or little food is consumed, feast and fast days alternate throughout the week. Animal studies and previous human clinical trials have provided evidence that various types of IF lead to weight loss and improved health markers. So far, interventional studies focused on the comparison of IF versus a control group, however only few studies compared different IF protocols directly. Given both the evidence for beneficial effects of IF as well as its growing popularity, it seems mandatory to reveal possible differences in the effectiveness of different protocols. The present project will allow to directly compare two types of IF with each other and with a control group in obese participants. Furthermore, established and novel monitoring tools to track individual progress during IF are scarcely used so far but may become an important help in the future and thus, will be implemented in this trial. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT06323889
Study type Interventional
Source University of Zurich
Contact Johanna Zehnder, MSc
Phone +41432532409
Email johanna.zehnder@usz.ch
Status Not yet recruiting
Phase N/A
Start date June 2024
Completion date January 2027

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