A new randomized controlled trial shows once again, high-dose vitamin D during pregnancy is safe and effective at raising vitamin D blood levels for mother and newborn child. The recent randomized controlled trial was published in the Nutrition Journal.
Lead author Daniel Roth, MD, and colleagues administered vitamin D or placebo to pregnant women aged 18 to 25 years from Bangladesh. The supplementation started at some point during their third-trimester of pregnancy and lasted until birth. They randomly assigned 130 women to take 35,000 IU of vitamin D per week or to take a placebo pill. The women on average took supplements for about 10 weeks, or until delivery.