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| Name | Class |
|---|---|
| Nutrisystem, Inc. | INDUSTRY |
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This randomized controlled trial will examine changes in some hormonal markers associated with acne among adults with moderate/severe acne randomized to a low glycemic index and glycemic load diet or usual eating plan for two weeks.
The objectives of this randomized controlled trial are to investigate the impact of a low glycemic index/load eating plan on endocrine aspects of acne. Specifically, this study will examine changes in blood biochemical markers of acne among adults with acne following a modified carbohydrate (low glycemic index/load) eating plan or their usual eating plan for two weeks. An external sponsor, Nutrisystem®, will provide some low glycemic index/load foods to the study participants randomized to the intervention group for two weeks. Study outcomes include changes in glucose, insulin, insulin resistance, insulin-like growth factor-1, and insulin-like growth factor binding protein-3 concentrations.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Low Glycemic Load Diet | Experimental | Participants received a diet education to follow a low glycemic load diet and received some low glycemic load staple foods. |
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| Usual Eating Plan | Active Comparator | Participants received a diet education to continue with their usual diet. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Low Glycemic Load Diet | Other | Participants received a diet education on a low glycemic load diet. |
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| Measure | Description | Time Frame |
|---|---|---|
| blood glucose in mg/dL | A trained clinician will use venipuncture to draw approximately 30 mL of blood to measure glucose concentrations | Change from baseline blood glucose concentrations after two weeks. |
| Insulin in uIL/mL | A trained clinician will use venipuncture to draw approximately 30 mL of blood to measure insulin concentrations | Change from baseline insulin concentrations after two weeks. |
| Insulin-like growth factor-1 in ng/mL | A trained clinician will use venipuncture to draw approximately 30 mL of blood to measure insulin-like growth factor-1 concentrations | Change from baseline Insulin-like growth factor-1 concentrations after two weeks. |
| Insulin-like growth factor binding protein-3 in mg/L | A trained clinician will use venipuncture to draw approximately 30 mL of blood to measure insulin-like growth factor binding protein-3 concentrations | Change from baseline insulin-like growth factor binding protein-3 concentrations after two weeks. |
| Measure | Description | Time Frame |
|---|---|---|
| Changes in Acne specific quality of life among participants following a low glycemic load diet or their usual diet for two weeks. | Acne specific quality of life will be measured using a validated questionnaire. Acne specific quality of life measured the effect of acne on the participants quality of life. | Change in baseline quality of life after two weeks. |
| Measure | Description | Time Frame |
|---|---|---|
| Changes in nutrition self efficacy among participants following a low glycemic load diet or their usual diet for two weeks | Nutrition self-efficacy, or the ability to make diet changes, will be measured using a validated questionnaire. | Change in nutrition self-efficacy after two-weeks. |
Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Kathleen Woolf, PhD | New York University | Principal Investigator |
| Jennifer Burris, PhD | New York University | Study Director |
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| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 23438493 | Background | Burris J, Rietkerk W, Woolf K. Acne: the role of medical nutrition therapy. J Acad Nutr Diet. 2013 Mar;113(3):416-430. doi: 10.1016/j.jand.2012.11.016. | |
| 29691143 | Derived | Burris J, Shikany JM, Rietkerk W, Woolf K. A Low Glycemic Index and Glycemic Load Diet Decreases Insulin-like Growth Factor-1 among Adults with Moderate and Severe Acne: A Short-Duration, 2-Week Randomized Controlled Trial. J Acad Nutr Diet. 2018 Oct;118(10):1874-1885. doi: 10.1016/j.jand.2018.02.009. Epub 2018 Apr 22. |
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| ID | Term |
|---|---|
| D000152 | Acne Vulgaris |
| ID | Term |
|---|---|
| D017486 | Acneiform Eruptions |
| D012871 | Skin Diseases |
| D017437 | Skin and Connective Tissue Diseases |
| D012625 | Sebaceous Gland Diseases |
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| Usual Eating Plan | Other | Participants received a diet education to continue with their usual eating plan. |
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