Pregnant mums who smoke risk changing child's DNA


Pregnant mothers who smoke may be unknowingly changing their baby's DNA, a new international study has found.

The study, published in the American Journal of Human Genetics, analysed more than 6000 women and children around the world. Mothers in 13% of the examined cases smoked regularly and their babies experienced DNA changes in more than 6000 places that babies of non-smoking mothers did not.

Lead author Dr Bonnie Joubert said the study showed that many DNA signals were tied to a baby's development pathways.

Topics:  pregnancies pregnancy smoking

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