Vitamin D Status During Pregnancy Affects Birth Outcomes
In this study, researchers in The Netherlands measured vitamin D levels in mothers' blood in their second trimester and levels in the umbilical cord after they gave birth. They also used techniques like ultrasounds to assess babies during pregnancy. They found that mothers with lower vitamin D levels in their blood gave birth to babies with smaller heads, shorter body lengths, and lower weights. They also found that mothers with the highest levels of vitamin D had the lowest risk of delivering babies pre-term, babies that had low birthweight, and for delivering babies of small size for their gestational age. Finally, after mothers gave birth, higher levels of vitamin D in the umbilical cord were associated with higher birth weight and weight for gestational age. They also found that mothers with high vitamin D levels in their blood produced cords with high levels. These results could not definitively say that vitamin D causes better birth outcomes, ...