Why is it harmful to smoke cigarettes while pregnant?
A baby gets everything from it's mother, from food to cigarette smoke. Nutrients and oxygen cine from the placenta and umbilical cord. Not only does smoking expose the baby to toxins, but it also damages the function of the placenta. When a mother smokes some of the oxygen in her blood is replaced with carbon monoxide, if this is happening the baby also has a lower amount of oxygen in it's blood. With less oxygen in the blood, the heart rate can rise and this can make them struggle for oxygen.
The Particles in tobacco smoke contain toxic substances that don't allow the blood to work in a healthy or normal way. This affects the way that the placenta sends nutrients to the baby; something essential for the babies growth.