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Effects of Juice Plus+® Supplementation on Endothelial Function in Overweight Men

Effects of Juice Plus+® Supplementation on Endothelial Function in Overweight Men: A Randomized, Controlled Trial

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01533987
Enrollment
70
Registered
2012-02-16
Start date
2009-07-31
Completion date
2010-08-31
Last updated
2012-02-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Overweight and Obesity

Keywords

Male, Overweight, Juice Plus

Brief summary

The purpose of the study is to determine the effects of daily ingestion of Juice Plus+® capsules containing Orchard, Garden and Vineyard blends on endothelial function and biomarkers of oxidative stress (oxidized LDL, lipid hydroperoxides and protein carbonyls) in overweight men as compared to the placebo group.

Detailed description

The prevalence of obesity in both adults and children in the United States has increased significantly over the past 50 years. More than 66% of adults in the US are now overweight or obese and at least 17% of children in the population at large are now considered overweight. Obesity may be a factor predisposing patients to a myriad of different comorbidities that increase the associated mortality rate. Several large prospective trials have documented that obesity is an independent risk factor for all-cause mortality from cardiovascular disease (CVD). Considering the major metabolic and biochemical changes that occur in obesity, such as atherogenic dyslipidemia, insulin resistance and hyperinsulinemia, endothelial dysfunction, and chronic inflammatory and prothrombotic states, obesity plays a role in the pathogenesis of systemic atherosclerosis and its clinical complications. Antioxidants are thought to help preserve the endothelium's capacity to generate NO, which acts to promote vasodilation, stabilize platelets, and promote the anti-inflammatory abilities of the endothelium. Juice Plus+® Capsules containing Orchard, Garden and Vineyard blends are rich in the traditional antioxidants β-carotene, Vitamin E and Vitamin C along with other carotenoids and phytonutrients. There is increasing attention to the possibility that micronutrients may exert health effects in concert. Outcomes in studies of isolated micronutrients, such as vitamin E, have often been often disappointing. Plant-derived micronutrients have the potential to contribute to vascular health by offering the endothelium protection from oxidative stress. Evidence of this anticipated effect would have implications for strategies to prevent or retard cardiovascular disease. Endothelial function testing using high-frequency ultrasound imaging of the brachial artery to assess endothelium-dependent flow-mediated dilatation (FMD) offers a non-invasive, uniquely valuable means of assessing aggregated influences on cardiac risk by gauging a physiologic response of the vascular endothelium. Proposed, therefore, is a randomized, double-blinded and placebo-controlled clinical trial of Juice Plus+® on endothelial function in overweight men with central adiposity.

Interventions

DIETARY_SUPPLEMENTJuice Plus

Juice Plus is the combination of Juice Plus+® Garden Blend, Juice Plus+® Orchard Blend and Juice Plus+® Vineyard Blend.

Sponsors

NSA, LLC
CollaboratorINDUSTRY
Griffin Hospital
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
MALE
Age
18 Years to 75 Years
Healthy volunteers
Yes

Inclusion criteria

1. Male age 25-75 years 2. Healthy (no known diabetes mellitus, cardiovascular disease, or eating disorder) 3. Non-smoker 4. Overweight (BMI ≥25) with central adiposity as indicated by waist circumference (≥102 cm). 5. Endothelial dysfunction with high-fat meal

Exclusion criteria

1. Use of lipid-lowering or antihypertensive medications, unless stable on medication for at least 3 months and willing to refrain from taking medication for 12 hours prior to EF scanning; 2. Regular use of multivitamins and/or complementary or alternative supplement therapy (including all Juice Plus+® products) and unwillingness to discontinue supplementation for at least 8 weeks prior to study initiation and for study duration 3. Anticipated inability to complete or comply with study protocol; 4. Diagnosed eating disorder 5. Any rheumatologic disease requiring regular use of NSAIDs or alternative medications 6. Regular use of fiber supplements 7. Use of insulin, glucose sensitizing medication, or vasoactive medication 8. Substance abuse (chronic alcoholism, or other chemical dependency 9. Pre-existing cardiovascular disease.

Design outcomes

Primary

MeasureTime frameDescription
Endothelial Function8 weeksBrachial artery flow mediated dilation (FMD)

Secondary

MeasureTime frameDescription
Weight8 weeks
Waist Circumference8 weeks
Blood pressure8 weeks
Serum biomarker measures8 weeksThese samples will be used to assess participants' biomarkers of oxidative stress (i.e. oxidized LDL levels, lipid hydroperoxides, and protein carbonyls) and compliance measure (i.e. serum carotenoids)

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026