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Polyphenolic Compounds

Purple Potato for Diabetes

Phase 1
Waitlist Available
Research Sponsored by University of Guelph
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Be older than 18 years old
Timeline
Screening 3 weeks
Treatment Varies
Follow Up 12 weeks
Awards & highlights

Study Summary

The hypothesis is that richly coloured purple vegetables, rich in polyphenolic compounds including anthocyanins will have higher antioxidant and other biological activities, than more lightly coloured versions of these foods. Diets of human subjects will be modified to allow consumption of 200-300 g of raw carrots or cooked potatoes. Participants will be randomized to consume either orange or purple carrots, or white or purple potatoes. They will consume these diets for 12 weeks and bioavailability of polyphenolics will be examined as well as anthropometry and blood biochemistry for changes in risk factors associated with cardiovascular disease.

Eligible Conditions
  • Diabetes
  • Inflammation
  • Obesity
  • High Blood Pressure
  • High Cholesterol

Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~12 weeks
This trial's timeline: 3 weeks for screening, Varies for treatment, and 12 weeks for reporting.

Treatment Details

Study Objectives

Outcome measures can provide a clearer picture of what you can expect from a treatment.
Primary outcome measures
Cholesterol
Secondary outcome measures
blood and urinary polyphenol metabolites
blood pressure
body composition
+2 more

Trial Design

4Treatment groups
Experimental Treatment
Placebo Group
Group I: Purple PotatoExperimental Treatment1 Intervention
Participants will consume 300-500 g of cooked purple potato per day
Group II: Purple CarrotsExperimental Treatment1 Intervention
Participants will consume 200-300 g raw purple carrots instead of orange carrots in the control arm
Group III: Orange carrotsPlacebo Group1 Intervention
Participants will consume 200-300 g typical varieties of orange carrots during the intervention
Group IV: White potatoPlacebo Group1 Intervention
Participants will consume 300-500 g of cooked white potatoes per day

Find a Location

Who is running the clinical trial?

University of GuelphLead Sponsor
80 Previous Clinical Trials
9,916 Total Patients Enrolled
Ontario Ministry of Agriculture, Food and Rural AffairsOTHER_GOV
8 Previous Clinical Trials
329 Total Patients Enrolled
1 Trials studying Diabetes
14 Patients Enrolled for Diabetes

Frequently Asked Questions

These questions and answers are submitted by anonymous patients, and have not been verified by our internal team.
Recent research and studies
clinicaltrials.govStudy
Effects of Purple Vegetables on Cardiovascular Disease (CVD) Risk Factors
Kelly Anne Meckling, PhD 2012. "Effects of Purple Vegetables on Cardiovascular Disease (CVD) Risk Factors". ClinicalTrials.gov. https://clinicaltrials.gov/ct2/show/NCT01564498.
All > Cardiovascular
~5 spots leftby Apr 2025
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