Clinical trials: Carotenoids
Black Pepper, Absorption
Effects of Black Pepper on the Absorption of Nutrients in Vegetables
The objective of this project is to determine the extent to which eating black pepper together with vegetables increase the absorption of carotenoids (a class of important nutrients) in the vegetables such as beta-carotene.
- Conditions
- Black Pepper, Absorption, Carotenoid
- Trial name
- NCT03490955
- Testing
- salad dressing (canola oil) and black pepper, salad dressing (canola oil), black pepper
- Where
- United States
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- University of Massachusetts, Amherst
Biological Availability
Dose-response Effects of Soybean Oil in Salad Dressing on Carotenoid/Fat-soluble Vitamin Bioavailability in Salad Vegetables
The objectives will be to evaluate the dose-response between the amount of soybean oil in salad dressing and the absorption of: 1) carotenoids, phylloquinone, and tocopherols in salad vegetables; 2) retinyl palmitate formed from…
- Trial name
- NCT02867488
- Testing
- Soybean oil in salad dressing
- Sponsor
- Iowa State University
Healthy Volunteer, Skin Condition
CaroRite™ for Skin Health and Signs of Ageing
The goal of this study is to investigate the efficacy of carotenoids administered orally on skin health, skin condition and visible signs of ageing in healthy females aged 40-55 years old.
- Conditions
- Healthy Volunteer, Skin Condition, Ageing Signs
- Trial name
- NCT06878001
- Testing
- Carotenoids
- Where
- Australia
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- RDC Clinical Pty Ltd
Inflammatory Markers
Lycopene-rich Juice Intervention to Reduce Inflammatory Markers Among Adults With Obesity
The purpose of this research is to see whether a finger scanning device can accurately measure carotenoids, the colorful substances in fruits and vegetables, in people's skin.
- Trial name
- NCT07120035
- Testing
- Lycopene-rich juice
- Where
- United States
- Volunteers
- 27 people, healthy volunteers welcome
- Sponsor
- East Carolina University
Vitamin A Deficiency
Beta-carotene Absorption and Bioconversion to Vitamin A From Biofortified Cassava Gari
The goal of the research study is to determine the absorption, metabolism, and bioconversion of carotenoids such as beta-carotene to vitamin A from gari made with biofortified cassava compared to a mixture of red palm oil and…
- Trial name
- NCT02210507
- Testing
- Biofortified cassava gari, White cassava gari, White cassava gari + red palm oil
- Where
- United States
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- USDA, Western Human Nutrition Research Center
Male Infertility
Effect of Eurycoma Longifolia (DLBS5055) and Multivitamins (Vitamin C+Vitamin E+ β-carotene) for Infertile Males
Infertility is defined as the inability of a couple to get pregnant after one year of regular and unprotected sexual intercourse.
- Trial name
- NCT06100432
- Testing
- DLBS5055 200mg, Multivitamin (Vitamin C 500mg + Vitamin E 100IU + Beta Carotene 10000IU)
- Where
- Indonesia
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Duta Wacana Christian University
Sleep Disturbance, Visual Health
Gac Fruit Oil Supplementation for Visual Health and Sleep Quality
This study evaluated the effects of gac fruit oil supplementation on visual health, sleep quality, depressive symptoms, cognitive function, and brain imaging parameters in adults with sleep disturbance.
- Trial name
- NCT07623070
- Testing
- Gac Fruit Oil Capsules
- Where
- Taiwan
- Volunteers
- 50 people
- Sponsor
- Yuanpei University of Medical Technology
Cardiovascular Diseases
Increased Access to Fruits and Vegetables for Hypertension in Immigrant Hispanic/Latinx Individuals
The goal of this observational study is to learn about the effect improved access to culturally-appropriate fruits/vegetables has on cardiometabolic markers, specifically systolic blood pressure and markers of adiposity in…
- Trial name
- NCT05802134
- Testing
- Fruit and vegetable supplement, Dietary and chronic disease management education
- Where
- 5 sites in United States
- Volunteers
- 21 people
- Sponsor
- St. Catherine University
Iron Absorption
Effects of Vitamin A and Carotenoids on Iron Absorption
The objective of this study is to investigate the effect of vitamin A and carotenoids on iron absorption in healthy subjects with low and normal vitamin A status.
- Trial name
- NCT01493297
- Testing
- Labeled iron solutions
- Where
- Venezuela
- Volunteers
- 25 people, healthy volunteers welcome
- Sponsor
- Swiss Federal Institute of Technology
Pediatric Obesity
Family-based Lifestyle Intervention Program and Carotenoid Supplementation for Children With Obesity
This is a pilot study of children between the ages of 8 to 11 years of age who are obese and participating in an intense family based intervention with a family-focused multi-component lifestyle intervention.
- Trial name
- NCT02060279
- Testing
- Lifestyle intervention and carotenoid supplements
- Where
- United States
- Volunteers
- 20 people
- Sponsor
- Nemours Children's Clinic
Healthy, Nutrition Poor
Effects of Lutein on Visual Function
Randomized, double blind, placebo-controlled intervention trial on the ocular benefits and inflammatory markers improvements of taking FloraGLO Lutein for 9 months.
- Trial name
- NCT03113864
- Testing
- Lutein
- Where
- United Kingdom
- Volunteers
- 14 people, healthy volunteers welcome
- Sponsor
- Kemin Foods LC
Ileostomy; Functional Disturbance, Healthy
Carotenoid Absorption and Metabolism From Green-leafy Vegetable Matrices
Absorption and metabolism of carotenoids from two types of spinach preparations will be investigated in two study groups, short bowel/ileostomy and healthy, respectively.
- Trial name
- Popeye (NCT02450227)
- Testing
- Spinach - Whole leaf (10 mg lutein), Spinach - Minced (10 mg/lutein)
- Where
- 2 sites in Denmark
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- University of Copenhagen
Retinopathy of Prematurity
Skin and Serum Carotenoids in Preterm Infants Fed on a Formula Supplemented With Carotenoids
The primary objectives of this study are to compare the serum and skin concentrations of beta-carotene, lutein, and lycopene in preterm infants fed preterm formulas with mixed carotenoids to serum concentrations in preterm…
- Trial name
- NCT00872664
- Testing
- carotenoids
- Where
- United States
- Volunteers
- 36 people
- Sponsor
- University of Utah
Diabetes Mellitus, Oxidative Stress
Low Dose β-carotene Supplementation Diminishes Oxidative Stress in Type 2 Diabetics and Healthy Individuals
Since diabetes has multiple etiologies and oxidative stress one of the proposed mechanisms, the objective is to determine the effect of supplementation with β-carotene to type 2 diabetics and healthy individuals, on iron…
- Conditions
- Diabetes Mellitus, Oxidative Stress, Iron Metabolism Disorders
- Trial name
- NCT01477112
- Testing
- Betacarotene, Controls. No treatment
- Where
- Venezuela
- Volunteers
- 117 people, healthy volunteers welcome
- Sponsor
- Instituto Venezolano de Investigaciones Cientificas
Mild Cognitive Impairment
The Effects of a Carotenoid Intervention on Cognitive Function
Past research suggests that retinal lutein levels are related to cognitive function as measured via behavioral tests. The goal of the present study is to investigate the relationship between lutein and cognitive function in a…
- Trial name
- NCT02023645
- Testing
- active supplement
- Where
- United States
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- University of Georgia
Diabetes, Diabetic Retinopathy
Diabetic Retinopathy Functional Evaluation Study: Monitoring Carotenoid Vitamins Treatment Using ERG
To evaluate the differences in retinal function as measured by ERG in diabetics with and without retinopathy 2) the ability of the Chromatic Electroretinogram (chERG) to detect changes in global retinal function following…
- Trial name
- NCT04117022
- Testing
- DVS supplementation
- Where
- 2 sites in United States
- Volunteers
- 45 people
- Sponsor
- ZeaVision, LLC
Vitamin A Deficiency
Retinol Equivalence of Plant Carotenoids in Children
To determine vitamin A value of beta-carotene in oil capsule, spinach, and golden rice. The experiments will be conducted in children (ages 7-9) with/without adequate vitamin A nutrition.
- Trial name
- NCT00082420
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Health Behavior
Evaluation of Changes in Skin Carotenoid Scores in Medical Students Following a Dietary Supplement-based Intervention
Skin Carotenoid Scores (SCS) are a biomarker of overall antioxidant status. This study extends an earlier study in which an increase in skin carotenoid scores (SCS) was observed in subjects who increased their intake of fruits…
- Trial name
- SCS2015 (NCT02464787)
- Testing
- LifePak Nano
- Where
- United States
- Volunteers
- 42 people, healthy volunteers welcome
- Sponsor
- Texas Tech University Health Sciences Center
Vitamin A Deficiency
Vitamin A Equivalence of Plant Carotenoids in Children
Our objectives will be to test the following hypotheses and to make the following determinations: (1) The absorption and bio-conversion of provitamin A carotenes taken by children are different between spinach, Golden Rice, and…
- Trial name
- NCT00680212
- Testing
- dietary carotenoids, spinach, rice, and synthetic beta-carotene
- Where
- United States
- Volunteers
- 72 people, healthy volunteers welcome
- Sponsor
- Tufts University
Nutrition Assessment
A Clinical Study to Evaluate the Efficacy of a Nutritional Supplement to Improve Carotenoid Content as Measured by a Non-invasive Hyperspectral Absorption Device
The goal of this clinical trial is to evaluate a nutritional supplement in an otherwise healthy adult population. The main questions it aims to answer are: Do antioxidant carotenoid levels increase in after supplementation as…
- Trial name
- NCT07380438
- Testing
- LifePak Optimum nutritional supplement
- Where
- South Korea
- Volunteers
- 84 people, healthy volunteers welcome
- Sponsor
- Pharmanex