Why are babies born to mothers who smoke often underweight?

Why are babies born to mothers who smoke often underweight?

Pregnancy and Substance Abuse - What You Need To Know

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Answer 1
November, 2020
Babies whose mothers smoke during pregnancy are at higher risk of SIDS, having weaker lungs and having a low birth weight. Low birth weight babies are at greater risk of death and are more vulnerable to infection, breathing difficulties and long-term health problems in adulthood.

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