The Effect of Cranberry Extract Supplementation on Cardiovascular Risk Factors in Obese, Insulin Resistant Humans

Completed · Not applicable · Has a placebo group

Conditions studied: Insulin Resistance, Atherosclerosis

In brief

The purpose of this study is to determine the health benefits of cranberry extract in people who are at risk for diabetes and heart problems.

Key facts

Study ID

NCT02068144

Run by

Pennington Biomedical Research Center

People needed

35

Starts

2014-02-01

Expected to finish

2018-07-11

Last updated by the study team

2018-08-28

Who can join

Age: 20 and older. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Are 20 years of age or older
• Not being treated with diabetes medication. However, if you are taking Metformin for pre-diabetes and are willing to stop taking the medication 2 weeks before and during the study that is ok. We will request clearance from your prescribing physician prior to stopping metformin and enrolling in the study.
• Have a blood sugar of 100-125 mg/dL (fasting) or 140-199 mg/dL after a 2 hour glucose tolerance test (determined by tests done at the screening visit)
• Have a fasting insulin more than or equal to 5 µIU/ml (determined by tests done at the screening visit)
• Have a Body Mass Index (BMI) ≥ 30 and ≤ 45.

You may not qualify if…

• Have a prior history of type 2 diabetes
• Are pregnant or breastfeeding.
• Are a woman able to have children and are not using birth control (i.e. barrier method, intrauterine and cervical devices, birth control pills, hormonal injections (Depo Provera® ), condoms with spermicidal gel or foam, contraceptive patch (Ortho Evra), diaphragm, or abstinence), or have had a tubal ligation or hysterectomy, or not at least 2 years past menopause.
• All women able to have children will have a pregnancy test at the screening visit. If you become pregnant during the study, you will be dropped from the study.
• Have type 1 diabetes.
• Are taking steroids (except topical or inhaled steroids).
• Other medications that may affect your blood sugar (i.e. certain blood pressure medications) are acceptable if the dose has not changed in the previous 6 months and the dose will not change during the study.
• Have a history or evidence of stomach or intestinal problems, e.g. irritable bowel syndrome; inflammatory bowel disease; ulcerative colitis or Crohn's disease; diverticulosis or diverticulitis; narrowing of the intestines, partial or complete removal of the stomach or small bowel; autonomic neuropathy consisting of difficulty swallowing; delayed stomach emptying or diarrhea; chronic, severe constipation; stomach or colon ulcers, or GI bleeding.
• Use laxatives or cathartics on a chronic basis.
• Take medications known to damage the kidneys, such as certain antibiotics, methicillin, and cyclosporin.
• Have any evidence of kidney disease.
• Have significant heart problems and/or history (within the last 6 months) of significant heart problems.
• Have evidence within the previous 6 months of liver disease such as hepatitis; jaundice; cirrhosis.
• Have clinically significant lung, neurologic, blood-related, immune system-related, cancer-related or metabolic disease.
• Have had a recurrence of cancer within the past five years, other than treated basal cell carcinoma.
• Are planning surgery during the study period.
• Have a history of substance abuse or alcoholism within the past 5 years, or significant psychiatric disorder that would interfere with your ability to complete the study.
• Have donated blood during the month before entering the study or are planning to donate blood during the study.
• Have participated in other studies using a research medication during the previous 3 months.
• Are currently smoking or have smoked within the past 6 months.
• No smoking will be allowed during the study.
• Have had a fluctuation in body weight >5% in the previous 2 months.
• Are taking prescription or over-the-counter medication for weight loss.
• Are taking weight loss or herbal supplements.
• Are taking prescription or over-the-counter anti-inflammatory medications (such as naproxen, aspirin, ibuprofen).

Where it is running

• Pennington Biomedical Research Center — Baton Rouge, Louisiana, United States

Full record on ClinicalTrials.gov

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