Children as young as seven affected by parents smoking
From Bristol University:
A new study shows that children as young as seven had elevated levels of cotinine (a by-product of nicotine) in their blood if their mother smoked, particularly children whose mothers smoked ten cigarettes a day or more.
The study looked at cotinine levels among children in the Children of the 90s study at the University of Bristol. It included over 3,000 children when they were aged seven and 2,000 children when they were aged 15.
The researchers found that the cotinine levels of children at both ages were strongly related to whether or not the mother smoked, and how heavily, indicating clear evidence of environmental tobacco smoke exposure (also known as passive smoking). Read more.