NCT03811587

Brief Summary

In this randomized, controlled, assessor blinded and prospective intervention study the investigators will evaluate the clinical feasibility and effectiveness of intermittent use of a fasting mimicking diet in patients with type 2 diabetes mellitus compared to usual care.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
100

participants targeted

Target at P50-P75 for not_applicable diabetes-mellitus-type-2

Timeline
Completed

Started Nov 2018

Typical duration for not_applicable diabetes-mellitus-type-2

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

November 5, 2018

Completed
2 months until next milestone

First Submitted

Initial submission to the registry

January 13, 2019

Completed
9 days until next milestone

First Posted

Study publicly available on registry

January 22, 2019

Completed
2.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

August 6, 2021

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

August 6, 2021

Completed
Last Updated

April 7, 2022

Status Verified

April 1, 2022

Enrollment Period

2.8 years

First QC Date

January 13, 2019

Last Update Submit

April 6, 2022

Conditions

Keywords

DietFasting

Outcome Measures

Primary Outcomes (2)

  • Concentration of HbA1c

    12 months

  • Dosage of antidiabetic medication used

    12 months

Study Arms (2)

Treatment group

EXPERIMENTAL

Diabetes type 2 patients will take a fasting mimicking diet of 5 consecutive days a month, for a duration of 12 months. Besides this, they will receive usual diabetes care from the general practitioner.

Other: Fasting Mimicking diet

Control group

NO INTERVENTION

Diabetes type 2 Patients will have no intervention, they will receive usual diabetes care from the general practitioner.

Interventions

The fasting mimicking diet is though to activate the metabolism as fasting would do, although the diet does include several meals a day and more calories than conventional fasting diets.

Treatment group

Eligibility Criteria

Age18 Years - 74 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Diagnosis of type 2 diabetes
  • Age \> 17 years and \<75 years
  • Treatment with diet only and have a HbA1c \> 48, or treatment with diet and metformin
  • BMI ≥ 27

You may not qualify if:

  • Recent myocardial infarction (\< 6 months)
  • Creatinine clearance \< 30 ml/min/1,73m2 (MDRD)
  • Pregnancy
  • Contraindications for MRI
  • Allergy for nuts, sesame, soya or another ingredient of the diet
  • History of syncope with calorie restriction in the past
  • Any significant other disease (at the discretion of the investigator)

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Leiden University Medical Centre

Leiden, South Holland, Netherlands

Location

Related Publications (6)

  • Schoonakker MP, van den Burg EL, van Peet PG, le Cessie S, Penny E, Numans ME, Pijl H, Lamb HJ. A fasting-mimicking diet programme reduces abdominal adipose tissue while preserving abdominal muscle mass in persons with type 2 diabetes. Nutr Metab Cardiovasc Dis. 2025 Oct;35(10):104111. doi: 10.1016/j.numecd.2025.104111. Epub 2025 Apr 30.

  • van den Burg EL, Schoonakker MP, van Peet PG, le Cessie S, Numans ME, Pijl H, Lamb HJ. A fasting-mimicking diet programme reduces liver fat and liver inflammation/fibrosis measured by magnetic resonance imaging in patients with type 2 diabetes. Clin Nutr. 2025 Apr;47:136-145. doi: 10.1016/j.clnu.2025.02.017. Epub 2025 Feb 18.

  • Roos PR, van den Burg EL, Schoonakker MP, van Peet PG, Numans ME, Pijl H, Westenberg JJM, Lamb HJ. Fasting-mimicking diet in type 2 diabetes reduces myocardial triglyceride content: A 12-month randomised controlled trial. Nutr Metab Cardiovasc Dis. 2025 Jul;35(7):103860. doi: 10.1016/j.numecd.2025.103860. Epub 2025 Jan 9.

  • van den Burg EL, Schoonakker MP, Korpershoek B, Sommeling LE, Sturm CA, Lamb HJ, Pijl H, Numans ME, Adriaanse MA, van Peet PG. Self-initiated lifestyle changes during a fasting-mimicking diet programme in patients with type 2 diabetes: a mixed-methods study. BMC Prim Care. 2024 May 2;25(1):148. doi: 10.1186/s12875-024-02405-5.

  • van den Burg EL, Schoonakker MP, van Peet PG, van den Akker-van Marle EM, Lamb HJ, Longo VD, Numans ME, Pijl H. Integration of a fasting-mimicking diet programme in primary care for type 2 diabetes reduces the need for medication and improves glycaemic control: a 12-month randomised controlled trial. Diabetologia. 2024 Jul;67(7):1245-1259. doi: 10.1007/s00125-024-06137-0. Epub 2024 Mar 28.

  • van den Burg EL, Schoonakker MP, van Peet PG, van den Akker-van Marle ME, Willems van Dijk K, Longo VD, Lamb HJ, Numans ME, Pijl H. Fasting in diabetes treatment (FIT) trial: study protocol for a randomised, controlled, assessor-blinded intervention trial on the effects of intermittent use of a fasting-mimicking diet in patients with type 2 diabetes. BMC Endocr Disord. 2020 Jun 24;20(1):94. doi: 10.1186/s12902-020-00576-7.

MeSH Terms

Conditions

Diabetes Mellitus, Type 2Fasting

Condition Hierarchy (Ancestors)

Diabetes MellitusGlucose Metabolism DisordersMetabolic DiseasesNutritional and Metabolic DiseasesEndocrine System DiseasesFeeding BehaviorBehavior

Study Officials

  • Hanno Pijl, MD, PhD

    Leiden Univerity Medical Centre

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Masking Details
Only measurements by assessors will be blinded.
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: Patients will be randomised to the intervention or control group.
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Clinical Professor

Study Record Dates

First Submitted

January 13, 2019

First Posted

January 22, 2019

Study Start

November 5, 2018

Primary Completion

August 6, 2021

Study Completion

August 6, 2021

Last Updated

April 7, 2022

Record last verified: 2022-04

Locations