View clinical trials related to Vitamin B 12 Deficiency.
Filter by:The aim of this pilot study is to conduct a study on geriatric population in Slovenia (non-users of dietary supplements/medicines with vitamine D, vitamin B12 and protein) and assess deficiency of selected nutrients, and to investigate the efficiency of the innovative food supplement prototype in improving nutritional status of elderly adults.
This is an intervention study aiming to understand the bioavailability of vitamin B12 from nori for vegetarians.
This study aims to examine the effects of Sourse's Hype Bites at being able to increase vitamin B12 levels to promote positive health outcomes. Participants will consume Hype Bites daily. Participants will also take surveys and blood samples to examine both the subjective experience of taking Hype Bites as well as changes in biomarkers across the trial.
Vitamin B12 is a cofactor for 2 enzymes that have essential functions in pregnancy, both for maternal health and for fetal development. However, there is currently limited data regarding the metabolic fate and optimal dose of supplemental vitamin B12 and its relationship to vitamin B12 status in pregnancy. This is a single-blinded, stratified, dose-ranging trial of maternal vitamin B12 supplementation during pregnancy that will be conducted at the Ifakara Health Institute Bagamoyo Clinical Trial Unit in Tanzania. The investigators will enroll 40 pregnant women (gestational age 25-28 weeks) and 10 non-pregnant women (comparison group). Participants will be blinded to dosing (2.6, 10, and 50 µg) and supplementation will be given for four weeks. With this trial, the investigators aim to enhance our understanding of vitamin B12 bioavailability during pregnancy in people with sufficient and insufficient baseline B12 status, identify priority dose regimens of vitamin B12 in pregnancy for investigation in later phase clinical trials to be conducted in populations where vitamin B12 insufficiency or deficiency is common, and identify biomarkers of vitamin B12 intake appropriate for pregnancy.
To obtain up-to-date data on nutritional status of older adults, a national dietary survey will be conducted in 2022/2023, providing data on the consumption of foods and enabling the assessment intakes of energy and specific nutrients. Participating subjects will be also screened for micronutrient status using blood biomarkers (focusing into vitamin D, folic acid, vitamin B12, and iron).
Introduction: Infants with severe vitamin B12 (cobalamin, Cbl) deficiency can develop severe, sometimes irreparable neurological damage in the first months of life. Neonatal Cbl deficiency is usually secondary and due to low maternal Cbl stores, e.g. in vegan diets or pernicious anaemia. This Cbl deficiency is then often also found in breast milk. In the Austrian newborn screening (NBS) for congenital diseases of the Cbl metabolism, newborns with secondary Cbl deficiency are also frequently discovered. For these, the risk-benefit assessment of the invasive work-up and treatment that follows is complex. Little is known about how Cbl levels in maternal blood relate to those in breast milk and the corresponding levels in the child. Objective: To investigate the effects of maternal nutrition and maternal Cbl status on neonatal Cbl levels. In the breastfeeding period, the effects of maternal nutrition on breast milk and infant Cbl status will be investigated, as well as their relationship to the maternal and infant microbiome. We hypothesise that adequate Cbl supply in early life is not determined by diet alone, but also by the interactions between diet and microbiome. Design and methods: Prospective cohort studies of 100 women and their children with measurement of Cbl, methylmalonic acid, homocysteine and other metabolites of Cbl metabolism in umbilical cord blood, maternal blood, dried blood spots and urine from the child at birth. The same parameters are measured in the mother's blood and breast milk after 3 and 9 months; in the child, only measurements of methylmalonic acid in the urine are carried out. A 3-day dietary record is taken from the mother at all measurement times, and from the child at the measurement times of 3 and 9 months. Stool is collected from mother and child at all measurement time points to examine the microbiome relevant to Cbl metabolism. A child development interview will be conducted with mothers by telephone at 12 months of age of their child. Schedule: The study lasts 2 years with pre- and post-processing. The LKH Bregenz has about 1200 births per year. Assuming a willingness to participate in the study and an enrolment rate of about 20% of the women, a recruitment period of 6 months is planned (enrolment of first participant day 1, last participant end of study month 6; last laboratory parameter measurement end of study month 15; last child development interview study month 18).
Background: Micronutrient (MN) deficiencies are severe and widespread in West Africa, particularly among young children and women of reproductive age. Bouillon is a promising food fortification vehicle because the product is centrally processed on large scale, consumed by most households in West African countries (even rural, poor households), and consumed by most members of the household in relatively constant amounts. However, several important research questions remain regarding whether the use of fortified bouillon would be feasible and effective for preventing or reducing micronutrient deficiencies in communities where such deficiencies are common. Specifically, no studies have assessed the impacts of multiple micronutrient-fortified bouillon on micronutrient status. The West Africa Condiment Micronutrient Innovation Trial (CoMIT) Project aims to address this gap, to inform future discussions around fortification of bouillon cubes and related products. Objective: This study aims to assess the impacts of household use of multiple micronutrient-fortified bouillon cubes (containing iodine in addition to vitamin A, folic acid, vitamin B12, iron, and zinc), compared to control bouillon cubes fortified with iodine only, on: 1. Micronutrient status among women 15-49 years of age and children 2-5 years of age after 9 months of intervention 2. Hemoglobin concentrations among women 15-49 years of age and children 2-5 years of age after 9 months of intervention 3. Breast milk micronutrient concentrations among lactating women 4-18 months postpartum after 3 months of intervention Methods: This randomized, controlled doubly-masked trial will be conducted in the Kumbungu and Tolon districts in the Northern Region of Ghana, where prior data indicate that deficiencies in the selected nutrients are common. Potential participants will be: 1) non-pregnant non-lactating women of reproductive age (15 - 49 years old), 2) children 2-5 years of age, and 3) non-pregnant lactating women 4-18 months postpartum. Eligible participants will be randomly assigned to receive household rations of one of two types of bouillon cubes: 1. a multiple micronutrient-fortified bouillon cube containing vitamin A, folic acid, vitamin B12, iron, zinc, and iodine, or 2. a control cube containing iodine only Each participant's household will receive a specific amount of bouillon cube every 2 weeks, and households will be advised to prepare their meals as usual, using the study-provided cubes. The trial duration will be 9 months (38 weeks) for non-pregnant, non-lactating women and children 2-5 years of age, and 3 months (12 weeks) for lactating women. The primary outcomes will be changes from baseline to endline in concentrations of haemoglobin and biomarkers of micronutrient status. Secondary outcomes will include change in prevalence of anaemia and micronutrient deficiency; dietary intake of bouillon and micronutrients; inflammation, malaria, and morbidity symptoms; and children's anthropometric measures and child development.
Globally, vitamin B12 deficiency is one of the most common micronutrient deficiencies. Poor status is also seen in affluent countries such as in Norway. Vitamin B12 is crucial for normal cell division and differentiation and necessary for the development and myelination of the central nervous system. Deficiency is also associated with impaired fetal and infant growth. In the proposed study we will measure the effect of daily oral vitamin B12 supplementation infants on neurodevelopment. We also aim to measure the impact of B12 supplementation on several other outcomes. Study design: Individually randomized double-blind placebo-controlled trial breastfed infants who will be assigned to a screening group (in which measurements will be obtained immediately) or a control group (in which serum will be stored and measurements done after one year). Pregnant women will be informed about the study during their first antenatal visit at the clinic and that we will re-approach them on their 6-week visit to their public health nurse. Infants who are deficient will be treated with peroral or intramuscular injections with 400 µg cyano-cobalamin. Infants in the control group will not be offered any intervention their blood sample will be stored for one year and then analyzed for the same nutrients as the intervention group. Outcomes: Primary: (i) neurodevelopment in children measured at 12 months of age (ii) growth in children measured by attained weight and length at 12 months. Secondary: (i) neurodevelopment and cognitive functioning in children later in life
The study consists of two arms: 1) intervention group using eggs as supplementary food given from 2nd trimester of pregnancy to birth, and 2) observational group of pregnant mothers. it aims to assess the effectiveness of improving dietary quality during pregnancy on the epigenetic and stunting related outcomes (growth and development) in infants, who will be followed up until 24 months old
This pilot aims to generate data that are critical for informing the design of a planned, more detailed study to evaluate the effect of multiple micronutrient (MN)-fortified bouillon cube on biomarkers of nutrient status of women and children. Data collection includes measures of nutritional status and dietary intake among women and children and their households in communities in northern Ghana.