For women, who smoked an average of 1-20 cigarettes a day, the odds of sudden unexpected infant death increased by 0.07 with each additional cigarette, stated new study.

‘Mothers who smoked three months before pregnancy and quit in the first trimester still had a higher risk of sudden unexpected infant death compared with non-smokers.’

"With this information, doctors can better counsel pregnant women about their smoking habits, knowing that the number of cigarettes smoked daily during pregnancy significantly increase the risk of SUID," said lead author Tatiana Anderson, from the Seattle Children's Research Institute. 




"We hope advising women about this risk will result in less babies dying from these tragic causes."
Women who reduced smoking by the third trimester saw a 12 per cent decrease in SUID risk. Quitting smoking was associated with a 23 per cent reduction in the risk.
"The most important takeaway is for women to understand that quitting smoking before and during pregnancy by far results in the greatest reduction in the SUID risk," she said.
For the study, the team used computational modelling techniques to analyse maternal cigarette smoking habits for about 20 million births in the US.
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Source-IANS