None listed
Conditions
Brief summary
People all over the world do not meet the recommended intake for fruit and vegetables. New strategies and options are needed to help people to boost their vegetable consumption. Carrots are an exceptional source of carotenoids, as well as fibre. Carotenoids are a precursor for vitamin A, one of the most common deficiencies worldwide, essential for eye health and may have various other health benefits through their antioxidant activity. The primary hypothesis of the study is that daily consumption of processed carrot powder added to foods is an effective, convenient and consumer accepted strategy to supplement vegetable intake, as shown by greater increases in carotenoid status after 4 weeks compared to daily consumption of carotenoid-rich vegetables.
Interventions
After 4 days of following a low carotenoid diet participants will consume 2 servings (2 tablespoons)/day of carrot powder added to suitable foods e.g. a broth style soup, pasta sauce, gravy, casserole, smoothie, yoghurt, juice etc in addition to usual vegetable intake for 4 weeks. The carrot powder will be provided to participants. Participants will receive detailed dietary instructions (developed in consultation with a dietitian), both orally and in writing, on how to follow the intervention. T
After 4 days of following a low carotenoid diet participants will consume 2 servings (2 tablespoons)/day of carrot powder added to suitable foods e.g. a broth style soup, pasta sauce, gravy, casserole, smoothie, yoghurt, juice etc in addition to usual vegetable intake for 4 weeks. The carrot powder will be provided to participants. Participants will receive detailed dietary instructions (developed in consultation with a dietitian), both orally and in writing, on how to follow the intervention. The amount of carrot powder is equivalent to 2 large carrots (2x72g carrot, also equivalent to 2 servings of vegetables). Participants will complete a daily checklist throughout the study to assess compliance to the intervention.
Sponsors
Commonwealth Scientific Industrial Research Organisation
Study design
Allocation
Randomised controlled trial
Intervention model
Parallel
Primary purpose
Prevention
Masking
Open (masking not used)
Eligibility
Sex/Gender
All
Age
18 Years to 75 Years
Healthy volunteers
Yes
Inclusion criteria
1. Healthy Male or Female adults 2. BMI between 18.5-30 kg/m2 3. Blood pressure <140/90 mmHg 4. Understand study and agree to participate 5. Adhere closely to the prescribed food consumption as per the research protocol
Exclusion criteria
1. History of chronic disease, e.g. type 2 diabetes, heart disease, cancer, atherosclerotic disease, hypertension, stomach ulcers, drug abuse or alcoholism 2. History of pancreatic insufficiency or other conditions resulting in fat malabsorption - chronic pancreatitis, cystic fibrosis, coeliac disease, crohns disease, gastric bypass surgery, small bowel resection, abnormal thyroid function 3. History of smoking during 6 months prior to study 4. Extended absences due to travel or other commitments 5. Known allergy to the test foods, and anyone with severe food allergies - even in trace amounts. 6. Pregnancy or breastfeeding 7. Medication or nutritional supplements that may affect the study outcomes 8. On any weight-loss programs
Outcome results
None listed