Quantification of Ketosis After Intake of Coconut Oil and Caprylic Acid-With and Without Glucose-After a 12-hour Fast

NCT ID: NCT03904433

Last Updated: 2019-05-03

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

15 participants

Study Classification

INTERVENTIONAL

Study Start Date

2018-08-24

Study Completion Date

2018-10-12

Brief Summary

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In a cross-over design, 15 participants, age 65-75, will be tested in six different arms in a randomised order. After a 12-hour fast participants will be served 2.5 dl coffee with 15 g cream + 30-50 g of different fatty acids, with or without 50 g glucose. Blood ketones and other biomarkers will be measured during 4 hours.

Detailed Description

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In the metabolic state ketosis, beta-hydroxybutyrate (BHB) and acetoacetate are synthesised from fatty acids in the liver, resulting in higher circulating levels. Ketosis can be induced by fasting or adherence to a low-carb-high-fat diet, but also by intake of-at least some-medium-chain-triglycerides (MCT). MCT are built from fatty acids with a chain of 6-12 carbon atoms. Caprylic acid (C8) is well known to be ketogenic, but the effect of lauric acid (C12)-constituting about 50% of coconut oil-is less clear.

The aim of this study is to assess ketosis, as a combined effect of an extended overnight fast, and intake of coconut oil or C8, and to study how ketosis is affected by simultaneous glucose intake. Sunflower oil is used as control, expected to not break fasting ketosis, although not being ketogenic in itself. Some sunflower oil is also added to C8 to make that arm isocaloric with coconut oil, with a roughly similar proportion of MCT.

Coffee with cream will be used as a vehicle, and although coffee has been reported to be mildly ketogenic, this effect is expected to be negligible and equally distributed between arms.

Conditions

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Aged

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

SINGLE

Participants

Study Groups

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1. Sunflower oil

Sunflower oil (30 g)

Group Type EXPERIMENTAL

Sunflower oil

Intervention Type OTHER

Sunflower oil given in coffee with cream

2. Caprylic acid

Caprylic acid (20 g) + Sunflower oil (10 g)

Group Type EXPERIMENTAL

Caprylic acid

Intervention Type DIETARY_SUPPLEMENT

Caprylic acid given in coffee with cream

Sunflower oil

Intervention Type OTHER

Sunflower oil given in coffee with cream

3. Caprylic acid + Glucose

Caprylic acid (20 g) + Sunflower oil (10 g) + Glucose (50 g)

Group Type EXPERIMENTAL

Caprylic acid

Intervention Type DIETARY_SUPPLEMENT

Caprylic acid given in coffee with cream

Sunflower oil

Intervention Type OTHER

Sunflower oil given in coffee with cream

Glucose

Intervention Type OTHER

Glucose dissolved in water

4. Coconut oil

Coconut oil (30 g)

Group Type EXPERIMENTAL

Coconut oil

Intervention Type OTHER

Coconut oil given in coffee with cream

5. Coconut oil + Glucose

Coconut oil (30 g) + Glucose (50 g)

Group Type EXPERIMENTAL

Coconut oil

Intervention Type OTHER

Coconut oil given in coffee with cream

Glucose

Intervention Type OTHER

Glucose dissolved in water

6. Coconut oil + Caprylic acid

Coconut oil (30 g) + Caprylic acid (20 g)

Group Type EXPERIMENTAL

Coconut oil

Intervention Type OTHER

Coconut oil given in coffee with cream

Caprylic acid

Intervention Type DIETARY_SUPPLEMENT

Caprylic acid given in coffee with cream

Interventions

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Coconut oil

Coconut oil given in coffee with cream

Intervention Type OTHER

Caprylic acid

Caprylic acid given in coffee with cream

Intervention Type DIETARY_SUPPLEMENT

Sunflower oil

Sunflower oil given in coffee with cream

Intervention Type OTHER

Glucose

Glucose dissolved in water

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Daily consumption of coffee
* Written informed consent

Exclusion Criteria

* Smoker
* Weight \<50 kg
* Diagnosed diabetes
* History of heart disease
* History of disease related to internal organs or metabolism
* Experience of "sensitive gut", or known intolerance to the test ingredients
* Medication expected to affect glucose- or lipid-metabolism
* Fasting during study or one month before
* High intensity physical activity \> 3 times/week
* Dementia
* Severe psychiatric conditions
* Hb\<125 g/L
* Participation in other lifestyle intervention last 6 months
Minimum Eligible Age

65 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Karolinska Institutet

OTHER

Sponsor Role lead

Responsible Party

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Miia Kivipelto

Professor, MD, PhD

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Miia Kivipelto, Professor

Role: PRINCIPAL_INVESTIGATOR

Karolinska Institutet

Locations

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Karolinska Institutet

Solna, Stockholm County, Sweden

Site Status

Countries

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Sweden

References

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Norgren J, Daniilidou M, Kareholt I, Sindi S, Akenine U, Nordin K, Rosenborg S, Ngandu T, Kivipelto M, Sandebring-Matton A. Serum proBDNF Is Associated With Changes in the Ketone Body beta-Hydroxybutyrate and Shows Superior Repeatability Over Mature BDNF: Secondary Outcomes From a Cross-Over Trial in Healthy Older Adults. Front Aging Neurosci. 2021 Aug 20;13:716594. doi: 10.3389/fnagi.2021.716594. eCollection 2021.

Reference Type DERIVED
PMID: 34489682 (View on PubMed)

Norgren J, Sindi S, Sandebring-Matton A, Kareholt I, Daniilidou M, Akenine U, Nordin K, Rosenborg S, Ngandu T, Kivipelto M. Ketosis After Intake of Coconut Oil and Caprylic Acid-With and Without Glucose: A Cross-Over Study in Healthy Older Adults. Front Nutr. 2020 Apr 15;7:40. doi: 10.3389/fnut.2020.00040. eCollection 2020.

Reference Type DERIVED
PMID: 32351966 (View on PubMed)

Other Identifiers

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CC1

Identifier Type: -

Identifier Source: org_study_id

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