Your roommate is a smoker. you and he are having an argument because he not only thinks that smoking is ok, but also thinks it is fine when a pregnant woman smokes—his mother did. you argue that, among other things, women who smoke when pregnant have newborns who are

Women who smoke during pregnancy have premature and low birth weight newborns.

Explanation:

Smoking during pregnancy causes placental malformation and increases the chance of the baby being born early (premature) and underweight. For women, the risk is deep vein thrombosis - which can lead to death. All this, science already knew. Now a new study shows, by ultrasound, the behavior of the fetus of mothers who smoke and reinforces the warning that women try to quit during the period.

Scientists believe this is because, when a woman smokes, the fetal central nervous system does not develop as it should - and this part is precisely responsible for controlling the movements of the face and body.

It is expected that, as the gestation progresses, babies will develop the ability to perform other, more complex movements. However, the researchers realized that this evolution takes a longer time to happen for pregnant smokers' fetuses.

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