Scientific basis: Globally, vitamin B12 deficiency is one of the most common micronutrient deficiencies. The only relevant source of vitamin B12 is animal-source foods and poor gut function may decrease absorption. 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 to pregnant women on neurodevelopment and growth of their children. We also aim to measure the impact of B12 supplementation on several other outcomes. Study design: Individually randomized double-blind placebo controlled trial in pregnant South Asian women at risk of poor vitamin B12 status. Participants will be randomized in a 1:1 ratio. Study participants and site: 800 pregnant women from early pregnancy. Women will be enrolled as early as possible, but no later than in week 15 of pregnancy. Intervention: Daily administration of 50 µg of vitamin B12 from early pregnancy until 6 months after birth. Comparator: Placebo, identical to the vitamin B12 supplements. Outcomes: Primary: (i) neurodevelopment in children measured at 6 and 12 months of age (ii) growth in children measured by weight and length at 12 months. Secondary: (i) neurodevelopment and cognitive functioning in children at 24 months (ii) gestational age at birth, (iii) fetal and infant growth measured by weight and length at birth, after 1 month and then at 3, 6, 9, and 24 months, (iv) hemoglobin concentration in children and mothers. Relevance for programs and public health: The results from this study can suggest new dietary guidelines for South Asian women that again can lead to improved pregnancy outcomes and neurodevelopment and cognitive functioning in South Asian children.
Age range
20 Years – 40 Years
Sex
FEMALE
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
Length
Timeframe: 12 months of age
Neurodevelopment
Timeframe: measured 6 and 12 months of age