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Dietary intake of vitamin A

Showing 1 - 25 of >10,000
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Dietary Assessment Trial in Arba Minch (Food Frequency Questionnaire, 24 Hour food recall)

Recruiting
  • Dietary Assessment
  • Food Frequency Questionnaire
  • 24 Hour food recall
  • Arba Minch, Ethiopia
    Arba Minch University
Oct 20, 2023

Diet Quality of PregnantStrict Plant-based Diet VersusOmnivorous

Not yet recruiting
  • Vitamin B 12 Deficiency
  • +3 more
  • Daily nutritional intake
  • (no location specified)
Sep 13, 2023

Women's Health Food Frequency Questionnaire

Recruiting
  • Diet Habit
  • Questionnaire
  • Ankara, Turkey
  • +1 more
May 5, 2023

Colorectal Cancer Trial in Waco (Vitamin D intervention, Placebo intervention)

Active, not recruiting
  • Colorectal Cancer
  • Vitamin D intervention
  • Placebo intervention
  • Waco, Texas
    Baylor University
May 20, 2022

Diet and Hip Fracture Risk in the United Kingdom Women's Cohort

Completed
  • Hip Fracture (First Incidence of)
  • Dietary pattern
  • +11 more
  • Leeds, West Yorkshire, United Kingdom
    University of Leeds
Sep 21, 2022

Vitamin D Deficiency, Immune Health, Muscle Function Trial in Guildford (Vitamin D Supplement)

Recruiting
  • Vitamin D Deficiency
  • +2 more
  • Vitamin D Supplement
  • Guildford, United Kingdom
    Faculty of Health and Medical Sciences
Sep 27, 2023

Nutritional Status of Women Undergoing in Vitro Fertilization

Recruiting
  • IVF
  • +4 more
    • Ljubljana, Slovenia
    • +1 more
    May 9, 2023

    Boys and Girls High School Basketball Players

    Recruiting
    • Bone Health
    • Vitamin D
    • +2 more
    • Bradenton, Florida
      IMG Academy
    Dec 19, 2022

    Iron Deficiency (Without Anemia), B12 Deficiency Vitamin Trial in Norwich (Recipes consumption, Hydroponic unit)

    Enrolling by invitation
    • Iron Deficiency (Without Anemia)
    • B12 Deficiency Vitamin
    • Recipes consumption
    • Hydroponic unit
    • Norwich, United Kingdom
      Quadram Institute Bioscience
    Feb 27, 2023

    Iodine for 3-6 Years Old Pre-school Children

    Recruiting
    • Nutritional Requirements
    • no intervention
    • Yuncheng, Shandong, China
      Shandong Institute for Endemic Disease Control and Research
    Oct 5, 2023

    Dietary Challenges in the Population of Nursing Homes' Residents

    Enrolling by invitation
    • Nutritional Status
    • +10 more
    • Diagnostic Tests
    • Ljubljana, Slovenia
      Nutrition Institute, Ljubljana
    Dec 7, 2022

    Hypovitaminosis D Trial in Bari (Vitamin D)

    Recruiting
    • Hypovitaminosis D
    • Vitamin D
    • Bari, Italy
      University of Bari
    Nov 16, 2023

    24-hour Recall Methodology Assisted by Digital Photographs for

    Completed
    • Dietary Intake
      • Medellin, Antioquia, Colombia
        Vidarium, Nutrition, Health and Wellness Research Center
      Jan 17, 2023

      Dietary Intake, Health and Micronutrient Status in Haiti

      Terminated
      • Micronutrient Deficiency
      • +3 more
      • No intervention (descriptive survey only)
      • Pétion-Ville, Haiti
        Partners of the Americas
      Jan 20, 2023

      Hypertension Trial (educational intervention)

      Not yet recruiting
      • Hypertension
      • educational intervention
      • (no location specified)
      Jul 27, 2023

      Diet Therapy, Healthy Volunteers Trial in Phoenix (Diet with no soda, Diet with 50% of carb intake from soda, Diet with 20% of

      Recruiting
      • Diet Therapy
      • Healthy Volunteers
      • Diet with no soda
      • +2 more
      • Phoenix, Arizona
        NIDDK, Phoenix
      Feb 2, 2023

      Dietary Antioxidants and Thiol Disulfide Homeostasis in T2DM

      Completed
      • Diabetes Mellitus, Type 2
      • Antioxidative Stress
      • Dietary antioxidant intake
      • Ankara, Turkey
        Ankara Yıldırım Beyazıt University
      Jan 16, 2023

      Dietary Exposure, Safety Issues Trial (UVB-exposed button mushrooms)

      Not yet recruiting
      • Dietary Exposure
      • Safety Issues
      • UVB-exposed button mushrooms
      • (no location specified)
      Dec 24, 2022

      Dermis Density, Wrinkles, Skin Hydration Trial in Ljubljana (CP5HA, Placebo syrup, CP5)

      Recruiting
      • Dermis Density
      • +5 more
      • CP5HA
      • +2 more
      • Ljubljana, Slovenia
        VIST - Faculty of Applied Sciences, Institute of Cosmetics
      Feb 13, 2023

      Amyloidosis Trial in Detroit (Tracking Dietary/Supplement Intake on MyFitnessPal smartphone application (app))

      Recruiting
      • Amyloidosis
      • Tracking Dietary/Supplement Intake on MyFitnessPal smartphone application (app)
      • Detroit, Michigan
        Karmanos Cancer Institute
      Feb 17, 2023

      Eating Rate Trial in Wageningen (ultra-processed slow eating rate diet, Ultra-processed fast eating rate diet)

      Recruiting
      • Eating Rate
      • ultra-processed slow eating rate diet
      • Ultra-processed fast eating rate diet
      • Wageningen, Gelderland, Netherlands
        Wageningen University
      Nov 3, 2023

      Relapses in Multiple Sclerosis (MS) and Vitamin D Intake

      Completed
      • Multiple Sclerosis
        • Peoria, Illinois
          OSF Saint Francis Medical Center
        Apr 22, 2022

        A Novel Equation for Estimating Sodium Intake in Peritoneal

        Not yet recruiting
        • Dietary Sodium Intake
          • (no location specified)
          Jul 24, 2023

          Hypertension Trial in Ottawa (Dietary Counselling, Potassium Citrate)

          Recruiting
          • Hypertension
          • Dietary Counselling
          • Potassium Citrate
          • Ottawa, Ontario, Canada
            Ottawa Hospital Research Institute
          Oct 31, 2022

          Appetite, Satiety, Energy Intake Trial in Leuven (Dietary Intervention with Wholemeal Bread with Yeast, Dietary Intervention

          Not yet recruiting
          • Appetite
          • +5 more
          • Dietary Intervention with Wholemeal Bread with Yeast
          • Dietary Intervention with Wholemeal Sourdough Bread
          • Leuven, Vlaams Brabant, Belgium
            KU Leuven/UZ Leuven
          Aug 29, 2023