Citrus Extract, Sleep and Mental Wellbeing

Inclusion Criteria:

• Healthy individuals with (minor) sleep disturbance
• Age 40-70 years
• BMI 18.5 - 30 kg/m2
• Willingness to give up being a blood donor from 4 weeks before the start of the study,during the study and for 4 weeks after completion of the study

Exclusion Criteria:

• Excessive caffeine use
• Major psychiatric/mental health disorders .
• Chronic sleep disorders
• Severe sleep disturbance for more than 1 year
• Other clear causes for poor sleep quality or mental wellbeing
• Use of medication or supplements that can affect outcomes
• Nonpharmacological treatment for sleep disorders
• Flight from a time-zone with >3 h difference ≤1 week before an intervention period
• Administration of investigational drugs or participation in any scientificintervention study which may interfere with this study
• Use of pre-, pro- or synbiotics within 1 month prior to the start of the study
• Reported weight loss or weight gain of >3 kg in the month prior to pre-study screening
• Smoking
• Abuse of products
• Known allergy to citruses
• Known pregnancy or lactation