Effects of an Organic Plant-rich Diet on Gut Microbiome and Vascular Function (ORGAMIC Pilot Study)

NCT ID: NCT04276974

Last Updated: 2022-03-03

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

17 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-02-24

Study Completion Date

2021-07-17

Brief Summary

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Previous work have shown that consumption of foods rich in polyphenols, such as berries and cocoa, led to beneficial changes in the gut microbiota composition, as well as improvements in biomarkers of cardiovascular disease risk in healthy volunteers. In addition, recent studies suggest that pesticide exposure has a detrimental effect on the gut microbiome in human populations and laboratory animals.The aim of this pilot study is to investigate the effects of short-term consumption of an organic and a non-organic plant rich diet on urinary polyphenol and pesticide levels, gut microbiome and selected biomarkers of cardiovascular health in a group of young healthy individuals.

Healthy men and women participants (10) will be recruited for a 2-arm randomised crossover controlled trial. Urinary polyphenol and pesticide levels after consumption of an organic and non-organic plant rich diet for 4 days will be analysed. Changes in gut microbiome composition and biomarkers of cardiovascular disease risk (flow-mediated dilation, blood pressure and arterial stiffness) will also be investigated.

Detailed Description

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Conditions

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Healthy Men and Women

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

DOUBLE

Participants Outcome Assessors

Study Groups

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Organic first then non-organic

Organic diet then non-organic diet, each for 4 consecutive days

Group Type EXPERIMENTAL

Organic diet

Intervention Type OTHER

Organic plant-rich foods (2000kcal for women, 2500kcal for men)

Non-organic diet

Intervention Type OTHER

Likewise Non-organic plant-rich foods (2000kcal for women, 2500kcal for men)

Non-organic first then organic

Non-organic diet then organic diet, each for 4 consecutive days

Group Type EXPERIMENTAL

Organic diet

Intervention Type OTHER

Organic plant-rich foods (2000kcal for women, 2500kcal for men)

Non-organic diet

Intervention Type OTHER

Likewise Non-organic plant-rich foods (2000kcal for women, 2500kcal for men)

Interventions

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Organic diet

Organic plant-rich foods (2000kcal for women, 2500kcal for men)

Intervention Type OTHER

Non-organic diet

Likewise Non-organic plant-rich foods (2000kcal for women, 2500kcal for men)

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Healthy men and women aged 20-40 years old.
* Body mass index between 18.5 and 30 kg/m2.
* Non-smokers
* Not already participating in a clinical trial.
* No diagnosed heart attack, stroke, angina, thrombosis, liver or kidney diseases, diabetes, chronic gastrointestinal disorder or cancer.
* Not currently taking any medication
* No history of excess alcohol intake or substance abuse.
* Happy to follow dietary instructions before and during the study and to attend the research centre for breakfast and lunch for a total of 10 days.
* Ability to prepare basic meals from ingredients provided.
* No food intolerances, allergies, hypersensitivity or follow any dietary restriction (e.g. gluten intolerance, coeliac, lactose intolerance) that will prevent your ability to follow the test diets.
* Weight stable (no weight change by more than 3 kg in the last 2 months).
* No travel arrangements outside the United Kingdom (UK) within the period of data collection.
* Able to understand the information sheet and willing to comply with study protocol.
* Able to give informed written consent.

Exclusion Criteria

* Women who are pregnant, intending to become pregnant, or breastfeeding.
* Participation in another clinical trial - Unable to comply with the study protocol.
* Weight change \>3kg in preceding 2 months and body mass index \<18.5 or \>30 kg/m2
* Current smokers, or reported giving up smoking within the last 6 months History of substance abuse, previous or current high alcohol intake (\>28 units/week for males and \>21 units/week for females).
* Reported history of Cardiovascular disease, diabetes, cancer, kidney, liver or bowel disease, gastrointestinal disorder or use of drug likely to alter gastrointestinal function)
* Blood pressure ≥160/100 mmHg
* Travel arrangements outside UK within the period of data collection.
Minimum Eligible Age

20 Years

Maximum Eligible Age

40 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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King's College London

OTHER

Sponsor Role lead

Responsible Party

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Dr Ana Rodriguez-Mateos

Principal Investigator, Lecturer in Nutritional Sciences

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Ana Rodriguez-Mateos, PhD

Role: PRINCIPAL_INVESTIGATOR

King's College London

Locations

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Department of Nutritional Sciences, School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London

London, , United Kingdom

Site Status

Countries

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United Kingdom

Other Identifiers

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HR-19/20-14

Identifier Type: -

Identifier Source: org_study_id

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