New DIETs: New Dietary Interventions Enhancing the Treatment for Weight Loss (New DIETs)
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ClinicalTrials.gov Identifier: NCT01742572 |
Recruitment Status :
Completed
First Posted : December 5, 2012
Last Update Posted : April 18, 2019
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Condition or disease | Intervention/treatment | Phase |
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Overweight Obesity | Behavioral: Diet | Not Applicable |

Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 63 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | NEW Dietary Interventions to Enhance the Treatments for Weight Loss (NEW DIETs for Weight Loss Study) |
Study Start Date : | November 2012 |
Actual Primary Completion Date : | August 2013 |
Actual Study Completion Date : | August 2013 |

Arm | Intervention/treatment |
---|---|
Experimental: Vegan
A vegan diet is one that does not contain any animal products (no meat, fish, poultry, eggs, or dairy) but emphasizes plant-based foods, such as fruits, vegetables, whole grains, and legumes/beans. We will also ask you to keep foods low in fat and low in glycemic index.
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Behavioral: Diet
Change in dietary intake |
Experimental: Vegetarian
A vegetarian diet is one that does not contain meat, fish, or poultry but does contain eggs and dairy, in addition to plant-based foods, such as fruits, vegetables, whole grains, and legumes/beans. We will also ask you to keep foods low in fat and low in glycemic index.
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Behavioral: Diet
Change in dietary intake |
Experimental: Pesco-Vegetarian
A pesco-vegetarian diet is one that does not contain meat or poultry but does contain fish and shellfish, eggs, and dairy, in addition to plant-based foods, such as fruits, vegetables, whole grains, and legumes/beans. We will also ask you to keep foods low in fat and low in glycemic index.
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Behavioral: Diet
Change in dietary intake |
Experimental: Semi-Vegetarian
A semi-vegetarian diet is one that contains all foods, including meat, poultry, fish and shellfish, eggs, and dairy, in addition to plant-based foods, such as fruits, vegetables, whole grains, and legumes/beans. However, red meat is limited to one time per week and poultry is limited to 5 times per week or less. We will also ask you to keep foods low in fat and low in glycemic index.
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Behavioral: Diet
Change in dietary intake |
Active Comparator: Omnivorous
An omnivorous diet contains all food groups. However, as part of this study, we will ask participants in this group to keep foods low in fat and low in glycemic index. Participants in this group will not need to attend weekly meetings but will receive information via e-mail each week.
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Behavioral: Diet
Change in dietary intake |
- Weight Loss [ Time Frame: 8 weeks ]
- Dietary Intake [ Time Frame: 8 weeks ]Changes in dietary intake will be measured using 2 days of 24-hour dietary recalls

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years to 65 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
- be between the ages of 18-65
- have access to a computer with Internet capabilities
- be overweight (Body Mass Index of 25-49.9)
- be able to attend weekly evening meetings at the University of South Carolina in Columbia, SC (up to 8 total) starting late January 2013.
Exclusion Criteria: Participants will be ineligible to participate if they:
- have a Body Mass Index less than 25 or greater than 49.9 kg/m2
- are currently pregnant
- are younger than 18 or older than 65 years of age
- are unable to attend weekly meetings for 8 weeks
- don't have access to the Internet and a computer
- don't have access to a scale for self-monitoring weight
- aren't willing to be randomized to one of five dietary groups
- have a psychiatric disease, drug or alcohol dependency, or uncontrolled thyroid condition
- have a major health condition, such as heart conditions, diabetes, and past incidence of stroke
- have an eating disorder (participants will be screened using the Eating Attitudes Test screener-participants who do not pass this screener will be asked to contact their physician)
- currently participating in a weight loss program or taking weight loss medications
- currently following a vegan, vegetarian, or pesco-vegetarian diet

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01742572
United States, South Carolina | |
University of South Carolina | |
Columbia, South Carolina, United States, 29208 |
Principal Investigator: | Brie Turner-McGrievy, PhD, MS, RD | University of South Carolina |
Responsible Party: | Brie Turner-McGrievy, Assistant Professor, University of South Carolina |
ClinicalTrials.gov Identifier: | NCT01742572 |
Other Study ID Numbers: |
Pro00021116 |
First Posted: | December 5, 2012 Key Record Dates |
Last Update Posted: | April 18, 2019 |
Last Verified: | April 2019 |
weight loss obesity overweight diet |
Overweight Weight Loss Body Weight Body Weight Changes |