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Connection between a baby’s crying and the vitamin B 12 level in the mother’s body

The first attempt of Dutch scientists to explain the connection between crying in babies and their mother’s insufficient nutrition has produced interesting results.
The babies of mothers whose vitamin B12 level has been normal during pregnancy are a lot calmer, whereas the babies of mothers who have had an insufficient vitamin B12 level during pregnancy are hearty criers and cry for about three hours a day. First of all, the baby’s nervous system is not fully developed at birth, due to a lack of vitamin B12. Secondly, a lack of B12 might have caused disturbances in the sleep cycle, as the level of the sleep hormone melatonin is below normal 4.

4. Goedhart G, van der Wal MF, van Eijsden M, Bonsel GJ.Maternal vitamin B-12 and folate status during pregnancy and excessive infant crying. Early Hum Dev. 2011 Apr;87(4):309-14.

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