This trial is active, not recruiting.

Condition overweight
Treatments control, hemp foods
Sponsor University of Manitoba
Start date August 2015
End date February 2016
Trial size 30 participants
Trial identifier NCT02400203, B2014:115-2


The objectives of this trial are to assess the effects of hemp product consumption, specifically hulled hemp seeds and hemp oil on blood fatty acid profiles and cardiovascular disease risk factors, in healthy overweight volunteers after 4 weeks of consumption.

United States No locations recruiting
Other countries No locations recruiting

Study Design

Allocation randomized
Endpoint classification efficacy study
Intervention model crossover assignment
Masking double blind (subject, investigator, outcomes assessor)
Primary purpose basic science
(Active Comparator)
54 grams of hulled sesame seeds, consumed in 2 daily 27 gram portions, and 30 grams of soybean oil per day
60 grams of hulled hemp seeds,consumed in 2 daily 30 gram portions, and 30 grams of hemp oil per day
hemp foods

Primary Outcomes

Change in red blood cell omega-3 fatty acid content
time frame: Baseline (Day 1) and Endpoint (Day 27,28) of each experimental period

Secondary Outcomes

Change in plasma lipids
time frame: Baseline (Day 1) and Endpoint (Day 27,28) of each experimental period
Change in inflammatory and endothelial function biomarkers
time frame: Baseline (Day 1) and Endpoint (Day 27,28) of each experimental period
Change in blood pressure and arterial stiffness
time frame: Baseline (Day 1) and Endpoint (Day 27,28) of each experimental period
Change in glucose metabolism and insulin sensitivity
time frame: Baseline (Day 1) and Endpoint (Day 27,28) of each experimental period

Eligibility Criteria

Male or female participants from 18 years up to 65 years old.

Inclusion Criteria: - Metabolically healthy overweight (BMI 25-35 kg/m2) participants aged 18-65, - Men and women with the ability to give written informed consent and comply with trial guidelines. Exclusion Criteria: - Pregnancy or lactation - Smokers (tobacco products for the last 6 months) - History of cancer, rheumatoid arthritis, chronic illness, cardiovascular problems, liver and kidney disease, inflammatory bowel disease, pancreatitis, gallbladder or biliary disease, neurological/psychological disease, bleeding disorders, experienced platelet abnormalities, and gastrointestinal disorders that could interfere with fat absorption, serum glucose over ≥6.1 mmol/L, serum triglycerides (TG) >4.52 mmol/L, and/or LDL cholesterol (LDL-C) ≥6.5 mmol/L, hypertension (systolic blood pressure ≥160 mm Hg or diastolic blood pressure ≥100 mm Hg), - Body mass index (BMI; in kg/m2) ≥35 - Consume or plan to consume anticoagulant, - Hypertension or lipid lowering medications, or hypotensive - Lipid lowering or n-3 PUFA dietary supplements - Reported consumption of more than 2 alcoholic drinks/day or history of alcoholism or drug dependence - Reported use of any experimental medication within 1 month prior to starting the trial.

Additional Information

Official title FREE Living Hulled HEMP Seed and Oil Trial
Principal investigator Peter J Jones, PhD
Description The trial will be a 4 week double-blinded, randomized, cross-over design with 2 treatment intervention (hemp and control) periods separated by a 4 week washout period. Thirty metabolically healthy overweight volunteers will be recruited into the trial. On day 1, and 27, 28 of each treatment period participants will be asked to come to the Richardson Center for Functional Foods and Nutraceuticals (RCFFN) for a 12 hour fasted blood sample. On day 1, participants will be given prepackaged sachets of treatment hulled seeds (hemp or sesame) and salad dressing, containing 30 g/d of treatment (hemp or soybean) oil (in individually packaged daily containers) will also be supplied. Participants will be instructed by clinical coordinators to integrate the products (2 sachets of seeds, 1 salad dressing) into their daily meals and to avoid other dietary sources of n-3 fatty acids, such as flax, chia, camelina, krill and fish products. Participants will be given activity monitors to wear during the intervention periods. Participants will be required to eat one sachet of hulled seeds in the morning and one in the evening, and to consume the dressing throughout the day, for each 4 week treatment period. Participants will be asked to continue their habitual diets, while avoiding large dietary sources of n-3 fatty acids, throughout the treatment and washout periods. Participants will be instructed to maintain the same level of physical activity and alcohol intake throughout the trial period. The trial coordinator will contact participants weekly via telephone or email to monitor treatment adherence and to answer any questions or concerns participants might have. Background dietary intakes will be measured at day 1 of the trial using a food frequency questionnaire, and during each treatment period by 3-day food record to be completed in the last week of each treatment period. Participants will be asked questions about the interventions including side effects, mood and perceived energy level by trial coordinators at the end of each intervention period.
Trial information was received from ClinicalTrials.gov and was last updated in May 2016.
Information provided to ClinicalTrials.gov by University of Manitoba.