Impact of Intermittent Fasting on Sleep and Quality of Life

Launched by UNIVERSITÉ LIBRE DE BRUXELLES · Apr 27, 2025

Keywords

ClinConnect Summary

This clinical trial is exploring how intermittent fasting affects sleep quality, overall quality of life, and feelings of fatigue in healthy adults. Intermittent fasting means that participants will have specific times when they can eat, either from 12 p.m. to 8 p.m. or from 8 a.m. to 4 p.m. The researchers want to find out if these different eating windows can help people sleep better and feel more energized in their daily lives. Participants will be split into two groups, alternating between the two eating schedules over a few months, and they will answer questionnaires about their sleep and overall well-being throughout the study.

To join this trial, participants need to be healthy adults aged 18 to 65 with a body mass index (BMI) between 18.5 and 29.9. However, individuals with certain health conditions, such as diabetes, serious sleep disorders, or significant mental health issues, are not eligible to participate. During the study, participants will keep track of what they eat using a special online tool and will have their body measurements taken at different points. This trial is currently recruiting volunteers, so if you or someone you know fits the criteria and is interested in improving sleep and quality of life through dietary changes, this could be a great opportunity!

Gender

ALL

Eligibility criteria

• Inclusion Criteria:
• • Healthy subjects
• • Adult subjects - age: between 18 and 65 years old
• • Subjects with a BMI between 18.5 and 29.9 kg/m\^2
• • Male and female subjects
• Exclusion Criteria:
• • Subjects \< 18 years old
• • Subjects with Diabetes Mellitus (type 1 and type 2)
• • Pregnant and/or breastfeeding and/or postpartum women
• • Underweight subjects (BMI \< 18.5)
• • Obese subjects (BMI \> 30)
• • Subjects with confirmed sleep disorders (requiring CPAP or sleep medication (sleeping pills))
• • Subjects with renal failure (GFR \< 30 ml/min/1.73 m\^2) or liver disorder
• • Subjects with serious cardiovascular, respiratory, neurological, or metabolic medical conditions
• • Subjects with malignant tumors
• • Subjects with a serious mental disorder requiring medication (e.g., antidepressants or anxiolytics)
• • Subjects with eating disorders
• • Subjects who have undergone major surgery or have been hospitalized due to major medical condition (surgery, stay in intensive care) within the last one year
• • Subjects who have lost more than 10% of their body weight within the last one year
• • Subjects actively participating in a weight-loss program
• • Subjects with alcohol use disorder (maximum 10 standard alcoholic drinks per week, 2 standard alcoholic drinks per day)
• • Subjects with substance use disorder
• • Subjects unable to provide informed consent
• • Subjects who do not participate simultaneously in another clinical trial