Smokers reduced by a further four cigarettes a day once they learned they were pregnant.
The study’s lead author, Dr Suena Huang Massey, said to EurekaAlert!, “Our findings suggest that pregnancy could curb smokers' desire to smoke before they are even aware of having conceived.
“While recognition of pregnancy is a common motivation to reduce or quit smoking, if biological processes in early pregnancy are also involved as suggested by this study, identifying precisely what these processes are can lead to the development of new smoking-cessation medications.”
Previous studies have established a link to between reduced smoking and pregnancy, but no study has ever determined when this reduction begins.
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