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CompletedNCT04189796Updated Jul 5, 2022

Jarlsberg Cheese Compared to Camembert Cheese

An interventional study of Cheese in Healthy Women and Osteocalcin, sponsored by Prof Stig Larsen. Completed at 1 site in Norway. Open to female participants aged 20 Years to 50 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2022-07-05.

Sponsored by Prof Stig Larsen · Not applicable, Interventional, and Health services research

Phase
Not applicable
Study type
Interventional
Enrollment
64
Allocation
Randomized
Ages
20 Years to 50 Years
Sex
Female
01

Study summary

The study objective consists of the following three aims:

  1. To compare the effect of daily intake of Jarlsberg cheese and Camembert cheese in change of the Osteocalcin level in healthy women after 6 weeks.
  2. To estimate the long-term increase of the osteocalcin level, change in the lipid pattern and the vital signs caused by optimized daily intake of Jarlsberg cheese.
  3. To verify the estimated maintaining dose of Jarlsberg cheese related to stabilized osteocalcin Level.

The study population consists of Healthy Voluntary (HV) women between 20 years and pre-menopausal age. The trial will be performed as a randomized Norwegian multicenter study with a semi-cross over design in which the participants randomized to Camembert cheese will be switched to Jarlsberg cheese after 6 weeks.

Read the detailed description

The recruited HV women fulfilled the inclusion without the exclusion criteria for the study will undergo a screening clinical investigation. The participants will be asked to avoid use of other cheese than the one allocated to in the study, but eat as usual. One week later, the first clinical investigation in the study will take place including blood sampling and measurement of vital signs. The HV women verified to fulfil the criteria for participation and signed the informed consent form will be included in the study. During this first clinical investigation in the study denoted as Day 0, the participants receive a study identification number. The HV will randomly be allocated to either daily intake of Jarlsberg cheese or Camembert cheese. The daily intake of cheese will be 57g/day in both study groups.

The participants meet for new clinical investigations every third week with measurement of vital signs and blood sampling. Osteocalcin and vitamin K will be analysed every third week whereas the haematological and biochemical analysis will be performed every six week.

The HVs allocated to Camembert cheese will after 6 weeks be switched to daily intake of Jarlsberg cheese in additional 6 weeks with clinical investigations every third week. The participants performed the 6 weeks of daily intake of Jarlsberg cheese will either be offered participation in the cheese de-escalation study (HV-Jarlsberg/IB) or an extended study of 6 weeks with unchanged Jarlsberg cheese dose. HVs with an increase \<10% in the osteocalcin level from screening to 6 weeks of Jarlsberg cheese intake will not be offered included in the de-escalation study. The first 12 HVs finalized 6 weeks with daily intake of Jarlsberg cheese obtaining an increase in the osteocalcin level from baseline ≥10% will be allocated to the de-escalation study HV-Jarlsberg/IB (separate protocol). The HVs included in the extended part of this study will receive an unchanged daily dose of Jarlsberg cheese for additional 6 weeks with clinical investigation every third week. The HVs switched to Jarlsberg cheese may be offered participation in a study part aiming to verify the maintaining dose obtained in HV-Jarlsberg/IB study. The duration of this part will be 6 weeks with clinical investigation every third week.

The main variable in this study will be osteocalcin measured in blood serum. Additionally, carboxylated and under carboxylated Osteocalcin and the ratio OR = [Carboxylated / Under Carboxylated] osteocalcin in serum will be central together the K2 variants MK-7, 8, 9, 9(4H) and vitamin K1. Triglyceride, LDL- and HDL cholesterol, vitamin D and vital signs will be secondary variables. As safety variables, haematological- and biochemical variables and adverse events (AE) will be recorded at each visit.Totally 64 HVs completing the study will be recruited from the eight participating General Practitioners sites.

02

Conditions studied

  • Healthy Women
  • Osteocalcin

Keywords

  • Cheese intake
  • Vitamin K
03

In context

Lead sponsor

This is the only study on the registry with Prof Stig Larsen as lead sponsor.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
20 Years to 50 Years
Sexes eligible
Female
Accepts healthy volunteers
Yes

Inclusion criteria

  • heathy women from 20 years and within pre-menopausal age

Exclusion criteria

Exclusion Criteria:

  • Pregnant women
  • Known gastrointestinal disorder
  • Abnormal liver or kidney function.
  • Diabetes
  • Suffering from verified cancer
  • Under systemic treatment with corticosteroids or other immunosuppressive drugs the last 3 weeks before start of the trial treatment.
  • Participating in another clinical trial with pharmaceuticals the last six weeks before start of this trial treatment.
  • Lactose intolerance or known milk product allergy
  • Not able to understand information.
  • Do not want or not able to give written consent to participate in the study.
05

Study design

Phase
Not applicable
Primary purpose
Health services research
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
64 participants (actual)

Study arms

  • Active comparator
    Jarlsberg

    Daily intake of Jarlsberg Cheese in at least 6 weeks

    Dietary Supplement: Cheese

  • Sham comparator
    Camembert

    Daily intake of Camembert Cheese in 6 weeks

    Dietary Supplement: Cheese

Interventions

  • Dietary supplementCheese

    Daily oral intake of cheese

06

What researchers measure

Primary outcomes

  1. Osteocalcin

    measured as ng/ml in serum

    Time frame: 6 weeks

  2. Vitamin K

    measured as ng/ml in serum

    Time frame: 6 weeks

Secondary outcomes

  1. Lipids

    Total cholesterol, HDL- and LDL-cholesterol measured as mmol/L in serum

    Time frame: 6 weeks

  2. Vital signs

    Systolic- and Diastolic bloodpressure measured in mmHg after 5 minutes in supine position

    Time frame: Every 6 weeks

07

Study locations

1 site
  • Skjetten Legesenter
    Skjetten, Skedsmo 2013, Norway
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 5, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04189796
Lead sponsor
Prof Stig Larsen
Collaborators
Norwegian University of Life Sciences, Tine
Responsible party
Prof Stig Larsen (Professor, Meddoc) — Sponsor-investigator
First posted
Dec 6, 2019
Start date
Jan 16, 2020
Primary completion
Sep 18, 2020
Completion
Nov 9, 2020
Last update
Jul 5, 2022

Study contacts

Helge E Lundberg, MD
principal investigator · Skjetten Medical Center

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jun 2022. You cannot join it, but the record below documents what was studied.

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