Clinical trials: Deficiency Vitamins
Vitamin d Deficiency, Preeclampsia
25- Hydroxyvitamin D Levels in Pregnancy and Effects on Pregnancy Related Disorders
Evaluation of 25- Hydroxyvitamin D levels in pregnant women in Austria and potential related disorders Hypothesis: Austrian pregnant women are Vitamin D deficient Present vitamin D supplementation in pregnancy is insufficient…
- Conditions
- Vitamin d Deficiency, Preeclampsia, Preterm Delivery, Gestational Hypertension
- Trial name
- VIDIS (NCT04637880)
- Where
- Austria
- Volunteers
- 249 people, healthy volunteers welcome
- Sponsor
- Medical University of Vienna
Crohn's Disease, Vitamin D Deficiency
Exploring the Effects of Vitamin D Supplementation on the Chronic Course of Patients With Crohn's Disease With Vitamin D Deficiency
Aims:Prospectively observe the effects of Vitamin D drops supplementation on the chronic course of Crohn's disease patients, analyze whether the effect of Vitamin D drops on CD patients is affected by factors such as disease…
- Conditions
- Crohn's Disease, Vitamin D Deficiency, Vitamin D Supplement
- Trial name
- NCT04308850
- Testing
- Vitamin D drops
- Where
- China
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Second Affiliated Hospital of Wenzhou Medical University
Congenital Adrenal Hyperplasia, Familial Hyperinsulinemic Hypoglycemia 1
Baby Detect : Genomic Newborn Screening
Newborn screening (NBS) is a global initiative of systematic testing at birth to identify babies with pre-defined severe but treatable conditions.
- Conditions
- Congenital Adrenal Hyperplasia, Familial Hyperinsulinemic Hypoglycemia 1, Phosphoglucomutase 1 Deficiency, Maturity Onset Diabetes of the Young
- Trial name
- BabyDetect (NCT05687474)
- Where
- Belgium
- Volunteers
- 6,824 people, healthy volunteers welcome
- Sponsor
- Centre Hospitalier Universitaire de Liege
Vitamin D Deficiency, Military Activity
Vitamin D Supplementation in Conscripts
A longitudinal, triple-blinded, randomized, placebo-controlled trial, with a 7-month follow-up period is conducted between October 2016 to April 2017.
- Trial name
- NCT04359524
- Testing
- Vitamin D3 (1200 IU/30µg)
- Where
- Estonia
- Volunteers
- 63 people, healthy volunteers welcome
- Sponsor
- Leho Rips
Vitamin D Deficiency
Effects of Vitamin D3 Supplementation on Antioxidant Enzymes Status in Vitamin D3 Deficient Asthma COPD Overlap (ACO) Patients
Asthma-COPD overlap (ACO) is a new entity in the world of respiratory ailments. The respiratory tract of these patients are continuously exposed to oxidants (due to cigarette smoking) causing oxidative stress.
- Trial name
- NCT03931889
- Testing
- Vitamin D3
- Where
- Bangladesh
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh
Vitamin B 12 Deficiency
Dried Purple Laver (Nori) as a Food Source of Vitamin B12 in Vegetarians
This is an intervention study aiming to understand the bioavailability of vitamin B12 from nori for vegetarians.
- Trial name
- NCT05614960
- Testing
- Dried purple laver (Nori)
- Where
- Taiwan
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Fu Jen Catholic University
Vitamin B12 Deficiency
Long-term Use of Proton Pump Inhibitors May Cause Vitamin B12 Deficiency in the Institutionalized Elderly
This study was designed to determine whether elderly residents of long term care facilitated who had been taking proton pump inhibitors (PPI) for more than 12 months were more likely to have vitamin B12 deficiency than residents…
- Trial name
- NCT00843453
- Testing
- blood collection, treatment (cyanocobalamin nasal spray)
- Where
- 2 sites in United States
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- University of Delaware
Neurosonographic Findings of Vitamin D Deficiency
Neurosonographic Findings in Pregnant Women With Vitamin D Deficiency
In the study, the potential effects of vitamin D deficiency on fetal neurodevelopmental parameters will be examined. In this context, fetal brain development will be compared between pregnant women with and without vitamin D…
- Trial name
- NCT06903247
- Testing
- Neurosonographic Findings of Vitamin D Deficiency in Single Healthy Pregnancies Presenting for Routine Antenatal Care Between 20-30 Weeks of Gestation.
- Where
- Turkey (Türkiye)
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Sanliurfa Education and Research Hospital
Vitamin D Deficiency
Effect of Vitamin D3 and Omega-3FA on Estradiol
The effect of vitamin D3 and omega-3 Fatty acids on estradiol levels.
- Trial name
- NCT03333564
- Testing
- VD3, Omega3-FA, VD3 and Omega-3FA
- Volunteers
- 116 people, healthy volunteers welcome
- Sponsor
- Applied Science Private University
Vitamin D Deficiency
Influence of Vitamin D Treatment on Multi-systemic Functions in Young Men With Vitamin D Deficiency Due to Work Conditions
Vitamin D has multiple systemic effects: bone and calcium metabolism, muscle function, insulin responsiveness, body-composition regulation, cell differentiation, and the immune system.
- Trial name
- NCT01016184
- Testing
- Vitamin D
- Where
- Israel
- Volunteers
- 358 people, healthy volunteers welcome
- Sponsor
- Rambam Health Care Campus
Vitamin D Deficiency
Bone Myoregulation Reflex and Postural Control in Vitamin D Deficiency
This observational study aims to investigate the relationship between vitamin D deficiency, postural stability, and neuromuscular control mechanisms in adults.
- Trial name
- BMR-VITD (NCT07435935)
- Where
- Turkey (Türkiye)
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Istanbul Physical Medicine Rehabilitation Training and Research Hospital
Vitamin A Deficiency
Bioefficacy of Beta-cryptoxanthin From Biofortified Maize
Since no quantitative information currently exists on how effectively the pro-vitamin A carotenoid (pVAC) β-cryptoxanthin (βCX) is converted to vitamin A (VA) in humans, this proof of principle study aims to compare the efficacy…
- Trial name
- BIOCRYPT (NCT04153968)
- Testing
- β-cryptoxanthin
- Where
- United Kingdom
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Newcastle University
Vitamin D Deficiency
Vitamin D in Periodontal and Cardiovascular Disease Progression
Vitamin D has been considered to possess anti-inflammatory and antimicrobial activity which may be a link for the known interaction of periodontitis (CP) and coronary heart disease (CHD).
- Trial name
- NCT03873935
- Testing
- Evaluation of periodontal status
- Where
- Italy
- Volunteers
- 179 people, healthy volunteers welcome
- Sponsor
- University of Messina
PCOS, Depression
Metformin, Vitamin D, and Depression in Polycystic Ovary Syndrome (PCOS) Trial
Open-label randomized clinical trial assessing the efficacy of Metformin versus Vitamin D in improving symptoms of depressed mood in polycystic ovary syndrome.
- Conditions
- PCOS, Depression, Vitamin D Deficiency, Insulin Resistance
- Trial name
- MINDD (NCT03380091)
- Testing
- Metformin, Vitamin D
- Where
- United States
- Volunteers
- 5 people, healthy volunteers welcome
- Sponsor
- University of California, San Francisco
Vitamin B12 Deficiency
Vitamin B12 Supplementation Study
We hope to learn the clinical and functional signs of sub-clinical vitamin B12 deficiency and its response to supplementation in non-anemic, non-pregnant, and non-lactating women in Rural Mexico.
- Trial name
- NCT00826657
- Testing
- Vitamin B12
- Where
- Mexico
- Volunteers
- 180 people, healthy volunteers welcome
- Sponsor
- USDA, Western Human Nutrition Research Center
Hypertension, Vitamin D Deficiency
DAYLIGHT: Vitamin D Therapy in Individuals at High Risk of Hypertension
This is a randomized, double-blind, multicenter, 6-month follow-up trial of low (400 IU/day) versus high (4000 IU/day) dose vitamin D supplementation in individuals with pre- and early stage 1 hypertension and vitamin D…
- Conditions
- Hypertension, Vitamin D Deficiency, Pre-Hypertension
- Trial name
- DAYLIGHT (NCT01240512)
- Testing
- Cholecalciferol
- Where
- 3 sites in United States
- Volunteers
- 534 people, healthy volunteers welcome
- Sponsor
- Massachusetts General Hospital
HIV Seropositive
Study of Vitamin D Supplementation to Male HIV Sero-positive Patients
The investigators want to investigate if HIV sero-positive males benefit from vitamin D supplementation. The study runs in 16 weeks and the participants are treated with one of three placebo controlled regimes (tablets): 1.
- Trial name
- NCT00990678
- Testing
- Rocaltrol, Vitamin D, Calcium
- Where
- Denmark
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Hvidovre University Hospital
Overweight and Obesity, Vitamin D Deficiency
Magnesium and Vitamin D Supplementation and Cardiometabolic Outcomes
The purpose of this study is to investigate the effects of a combined vitamin D and magnesium supplementation on parathyroid hormone and cardiometabolic health in persons living with obesity.
- Conditions
- Overweight and Obesity, Vitamin D Deficiency, Magnesium Deficiency, Cardiovascular Risk Factor
- Trial name
- NCT03134417
- Testing
- Vitamin D and magnesium, Vitamin D
- Where
- United States
- Volunteers
- 109 people, healthy volunteers welcome
- Sponsor
- Drexel University
Iron Deficiency (Without Anemia), B12 Deficiency Vitamin
Hydroponic Fortification and Dietary App Effect on Nutrients Level (Harvest)
Veganism and vegetarianism have clear benefits where they have a lower risk of many health issues. However, they also have a higher risk of nutrients and vitamin deficiency such as iron and vitamin B12.
- Trial name
- NCT05740462
- Testing
- Recipes consumption, Hydroponic unit
- Where
- United Kingdom
- Volunteers
- 52 people, healthy volunteers welcome
- Sponsor
- Quadram Institute Bioscience
Deficiency of Vitamin D3
Study on the Effects of a Recommendation Based Supply of Vitamin D3 in Healthy Volunteers
The aim of this study is to investigate whether a supplementation of 20 µg Vitamin D3 per day for 12 weeks can be used to normalize vitamin d-Status
- Trial name
- NCT01711905
- Testing
- Vitamin D3
- Where
- Germany
- Volunteers
- 107 people, healthy volunteers welcome
- Sponsor
- Martin-Luther-Universität Halle-Wittenberg