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The Effects of Hydrolysed Casein on Sleep, Stress and Mental Health in Young Adults

The Effects of Hydrolysed Casein on Sleep, Stress and Mental Health in Young Adults

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12625001080415
Enrollment
46
Registered
2025-10-03
Start date
2024-01-31
Completion date
2024-03-28
Last updated
2025-10-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

Initial research suggests hydrolysed casein may assist with sleep duration in people who has less than ideal sleep habits. The current trial enrolled participants for two 5-week periods to trial whether hydrolysed casein or skim milk powder altered sleep and indirectly depression, anxiety and stress levels. The trial received ethics approval from the Auckland Health Research Ethics Committee (AHREC, Ref. AH26076), and was conducted according to the guidelines of the Declaration of Helsinki.

Interventions

Oral consumption of hydrolysed casein containing food bar (3g) daily for 5 weeks followed by two weeks wash out and another 5-week active phase. Adherence was assessed using a participant text messaging approach.

Sponsors

University of Auckland
Lead SponsorUniversity

Study design

Allocation
Randomised controlled trial
Intervention model
Crossover
Primary purpose
Educational / counselling / training
Masking
Blinded (masking used) (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
All
Age
20 Years to 35 Years
Healthy volunteers
No

Inclusion criteria

The inclusion criteria for the study were adults aged between 20 and 35 years of age with existing low sleep quality. Sleep quality was assessed using the Pittsburgh Sleep Quality Index (PSQI), and individuals who scored > 5 were eligible to participate.

Exclusion criteria

Exclusion criteria included allergies to dairy, lactose intolerance, and a sleep deprivation score of < 5.

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026