|A new study has revealed that smoking during pregnancy alters the thyroid hormones in both the mother and the baby.
Researchers at the Peninsula Medical School at Royal Devon and Exeter Hospital in the United Kingdom measured thyroid hormone levels in the umbilical cords of babies born to mothers who smoked during pregnancy.
They found that smoking-related changes in thyroid function extended to the foetus and the researchers warned that impaired thyroid function could have a potentially harmful biological impact.
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