Effect of Dietary Cholesterol on Plasma Lipids

Not Applicable

Completed

• Conditions: Dietary Modification; Nutritional and Metabolic Disease
• Interventions: Other: Dietary Effect of Cholesterol - Egg Phase; Other: Dietary Effect of Cholesterol - Non-Egg Phase

• Registration Number: NCT03698929
• Lead Sponsor: Physicians Committee for Responsible Medicine

Brief Summary

The Physicians Committee is carrying out a research study to improve the investigator's understanding and expand the literature to quantify the effect of foods on blood cholesterol. This study will measure changes in low density lipoprotein (LDL) concentration, sometimes called "bad cholesterol," over 2 study periods of 4 weeks each, with 1 rest week in between. Approximately 50 subjects will participate in this study.

Detailed Description

In a 9-week double-blind, crossover trial, participants will consume baked goods with either 2 egg yolks or an isocaloric egg-free product daily for 4 weeks. After a one-week washout period, participants will cross to the other dietary intervention. Participants will be asked not to make changes to their exercise patterns or diet, apart from consuming the provided products, for the study period. Changes in LDL cholesterol concentrations will be the primary dependent variable.

Study evaluations, known as health assessments, will be held at the Physicians Committee's office.

Group assignment: After the study entry, will be assigned by chance, like the flip of a coin, to one of two groups. The participant will have an equal chance of being assigned to either group. Each group will be asked to consume baked goods daily. The two groups will consume the same baked goods, but in a different order. The baked goods will be made from wheat flour with a small amount of sugar, salt, yeast, and other ingredients that are common to baked goods. There will be no animal-derived ingredients, except that some products will contain egg. Each week, the participant will be given a week's worth of baked goods.

Study Timeline

• Study Start: 2018-09-17
• Study First Submitted: 2018-09-25
• Study First Submitted QC: 2018-10-04
• Study First Posted: 2018-10-09
• Primary Completion: 2018-11-20
• Study Completion: 2018-11-20
• Status Verified: 2019-03
• Last Update Submitted: 2019-03-18
• Last Update Posted: 2019-03-20

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 9

Inclusion Criteria

• Following vegan diet for 6 or more months

Exclusion Criteria

• Following vegan for less than 6 months
• Smoking during the past six months
• Alcohol consumption of more than 2 drinks per day or the equivalent, episodic increased drinking (e.g., more than 2 drinks per day on weekends), or a history of alcohol abuse or dependency followed by any current use
• Pregnancy or intention to become pregnant during the study period
• Unstable medical or psychiatric illness
• Lack of English fluency
• Inability or unwillingness to participate in all components of the study
• Egg allergy
• Use of cholesterol-lowering medications

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
Dietary Effect of Cholesterol - Egg Phase	Dietary Effect of Cholesterol - Egg Phase	In a randomized, 9-week crossover trial, we will test the effects of dietary cholesterol in individuals without baseline cholesterol intake through two 4-week dietary intervention periods, using baked goods containing egg yolks or egg-free baked goods. During the egg phase participants will consume two egg yolks a day for four weeks. Each week, participants will be given a week's worth of baked goods containing two egg yolks each.
Dietary Effect of Cholesterol - No-Egg Phase	Dietary Effect of Cholesterol - Non-Egg Phase	In a randomized, 9-week crossover trial, we will test the effects of dietary cholesterol in individuals without baseline cholesterol intake through two 4-week dietary intervention periods, using baked goods containing egg yolks or egg-free baked goods. During the no-egg phase participants will consume an egg-free product for four weeks. Each week participants will be given a week's worth of egg-free baked goods.

Primary Outcome Measures

Name	Time	Method
Effect of Dietary Cholesterol on Plasma Lipids	9 weeks total	Examining the change of plasma lipids after consuming dietary cholesterol daily for one of two 4 week intervention periods with a 1 week washout period.

Trial Locations

Locations (1)

Physicians Committee for Responsible Medicine; 🇺🇸 Washington, District of Columbia, United States