The Effects of Western Diet Patterns on Plasma Inflammatory and Cardio Metabolic Health Signatures in Middle-aged Adults
The Western diet pattern or standard American diet is a modern dietary pattern that is characterized by high intakes of meat, pre-packaged foods, fried foods, high-fat dairy products, eggs, refined grains etc. When considering the role of saturated fat, it may be prudent to advise limiting all foods that contain saturated fats, including unprocessed/minimally processed meat, eggs, whole dairy in addition to processed, pre-packaged foods; however, this reductionist approach fails to take into account the food matrix and overall diet in which these nutrients are consumed.
Epidemiological evidence suggests that increased modern, pre-packaged food consumption is a major risk factor for metabolic disease by promoting inflammation. Based on these data, the investigators hypothesize that the pro-atherogenic effect of the Western diet is caused by the pro-inflammatory effects of consuming large amounts of modern ultra-processed foods, and that consumption of a similar amount of fat from minimally processed beef, poultry, dairy, eggs, as part of an unprocessed diet will positively impact inflammatory markers and lipoprotein profiles of study participants when compared to a diet rich in modern ultra-processed foods.
연구 개요
연구 유형
등록 (실제)
단계
- 해당 없음
연락처 및 위치
연구 장소
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North Carolina
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Durham, North Carolina, 미국, 27701
- Duke University School of Medicine
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참여기준
자격 기준
공부할 수 있는 나이
건강한 자원 봉사자를 받아들입니다
연구 대상 성별
설명
Inclusion Criteria:
- Age ≥35 and ≤60 years;
- BMI ≥25 and ≤35 kg/m2;
- Weight stable in last 3 months (Loss or gain <4%);
- Consistent physical activity levels;
- Hemoglobin A1C (HbA1C) ≤6.4%;
- Fasting insulin; <15 µU/mL;
- Fasting plasma glucose concentration <126 mg/dl;
- Willingness to eat the food provided in this study;
- Subjects must be able to speak and understand English to participate in this study
- Own a smartphone or other mobile device capable of downloading the Garmin Connect app.
Exclusion Criteria:
- Diagnoses of active malignancy, congestive heart failure, diabetes mellitus, chronic obstructive pulmonary disease, thyroid disease or other metabolic disorders that influence metabolism;
- Evidence of impaired kidney function (Estimated glomerular filtration rate [eGFR] <44 mL/min;
- Regular use of medication that interferes with the measurement of study outcomes as determined by the study team (e.g., NSAIDs, corticosteroids);
- Consuming >14 drinks per week of >4 drinks per night twice/week for male; >7 drinks per week or >3 drinks per night twice/week for female;
- Use of cigarettes (or other tobacco products) or use of any other (recreational) drug in last 3 months;
- Engaged in high-level competitive exercise (e.g., marathons, triathlons, cycling, weight-lifting competitions etc.)
- Self-reported sleep duration <5 hours per night;
- Any inflammatory diseases (e.g. asthma, autoimmune diseases, coeliac disease, glomerulonephritis, hepatitis, inflammatory bowel disease, arthritis);
- Use of antibiotics in last 30 days;
- Pregnant or lactating women;
- Eating disorders (e.g., anorexia nervosa, bulimia nervosa, binge eating disorders etc.)
- Psychological disorders (e.g., clinical depression, bipolar disorders etc.);
- Strict dietary patterns (e.g., vegan, carnivore, kosher, low-carb etc.);
- History of stomach or bowel resection (other than appendectomy), gastric bypass or other bariatric weight loss procedure effecting absorption;
- Persons who are not able to grant voluntary informed consent;
- Persons who are unable or unwilling to follow the study protocol or who, for any reason, the research team considers not an appropriate candidate for this study, including non-compliance with screening appointments or study visits.
공부 계획
연구는 어떻게 설계됩니까?
디자인 세부사항
- 주 목적: 기초 과학
- 할당: 무작위
- 중재 모델: 크로스오버 할당
- 마스킹: 하나의
무기와 개입
참가자 그룹 / 팔 |
개입 / 치료 |
|---|---|
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활성 비교기: Traditional Diet
Unprocessed/minimally processed whole foods.
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Consuming an traditional whole foods based diet for 4 weeks.
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활성 비교기: Modern Diet
Multi-ingredient, ultra-processed formulations of the traditional diet.
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Consuming an processed formulation of the traditional diet for 4 weeks.
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연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
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Change in plasma interleukin-6 levels
기간: Baseline, up to 4 weeks.
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Plasma interleukin-6 levels will be measured before and after each diet
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Baseline, up to 4 weeks.
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Change in plasma c-reactive protein levels
기간: Baseline, up to 4 weeks.
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Plasma c-reactive protein levels levels will be measured before and after each diet
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Baseline, up to 4 weeks.
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Change in plasma acylcarnitine profiles
기간: Baseline, up to 4 weeks.
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Plasma acylcarnitines profiles levels will be measured before and after each diet
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Baseline, up to 4 weeks.
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2차 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
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Change in gut microbiota communities
기간: Baseline, up to 4 weeks.
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Bifidobacterium, Faecalibacterium prausnitzii, Anerostipes, Roseburia
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Baseline, up to 4 weeks.
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Energy expenditure
기간: up to 4 weeks.
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Measured by the doubly labeled water method during the last week of each diet
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up to 4 weeks.
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Change in Neuroinflammation
기간: Baseline, up to 4 weeks.
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Neurofilament light (NfL), glial fibrillary acidic protein (GFAP), Aß42 and p-tau will be measured before and after each diet
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Baseline, up to 4 weeks.
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공동 작업자 및 조사자
스폰서
수사관
- 연구 책임자: Stephan van Vliet, PhD, Duke University
- 수석 연구원: Kim Huffman, MD, PhD, Duke University
연구 기록 날짜
연구 주요 날짜
연구 시작 (실제)
기본 완료 (실제)
연구 완료 (실제)
연구 등록 날짜
최초 제출
QC 기준을 충족하는 최초 제출
처음 게시됨 (실제)
연구 기록 업데이트
마지막 업데이트 게시됨 (실제)
QC 기준을 충족하는 마지막 업데이트 제출
마지막으로 확인됨
추가 정보
이 연구와 관련된 용어
기타 연구 ID 번호
- Pro00103827
개별 참가자 데이터(IPD) 계획
개별 참가자 데이터(IPD)를 공유할 계획입니까?
약물 및 장치 정보, 연구 문서
미국 FDA 규제 의약품 연구
미국 FDA 규제 기기 제품 연구
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