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.