Smoking harms your baby. I am sure you wouldn't get support for harming your baby if it were drugs.
How about this. Think about the harm smoking while pregnant is doing to your baby.
Smoking While Pregnant
If you smoke when you are pregnant the combination of carbon monoxide and nicotine in cigarettes makes it harder for your baby to get the oxygen and nourishment it needs. Smoking places stress on the baby’s heart and affects the development of its lungs.
Pregnant smokers have a greater risk of miscarriage, may have a difficult birth and risk having a low weight baby, which will be more vulnerable to infection and other health problems. The baby of a smoker is more likely to die at or shortly after birth.
If you quit before becoming pregnant or in the first few months, your baby’s birthweight will be the same as if you had been a non-smoker. Also, you reduce the risk of premature birth and other pregnancy complications.
What Happens To My Baby When I Smoke?
The umbilical cord is your baby’s lifeline. Blood flow through this cord provides your baby with oxygen and the food it needs to grow. Every puff you take on a cigarette has an immediate effect on your baby. Carbon monoxide replaces some of the oxygen in your blood, reducing the amount of oxygen received by your baby through the umbilical cord.
The nicotine in cigarettes increases your heart rate and your baby’s heart rate. It also causes your blood vessels to narrow, reducing the flow of blood through the umbilical cord. This makes it harder for your baby to get the oxygen and nourishment it needs.
To prepare for breathing after birth, your unborn baby will be practising by exercising some of its chest muscles. Nicotine reduces these breathing movements.
Cigarette smoke also contains many other harmful poisons, which pass through your lungs and into your bloodstream, which your baby shares.
Smoking during pregnancy by a mother is a major cause of sudden infant death syndrome (SIDS or ‘cot death’). It also has the following effects:
- Increases the risk of miscarriage
- Increases the risk of complications during the birth
- Increases the likelihood of having a low-weight baby who is more vulnerable to infection and other health problems
- Increases the chances of the baby dying at or shortly after birth.
Can Quitting Cold Turkey Harm My Baby?
There is no evidence to support the claim that quitting cold turkey could harm the foetus. On the contrary, every cigarette delivers many chemical agents that put the baby under stress. In particular, carbon monoxide displaces oxygen from red blood cells and makes it harder for the blood cells to release oxygen. This badly affects the transfer of oxygen from the mother’s blood to the baby’s blood across the placenta.
Tobacco smoke has very high levels of oxidizing chemicals which upset important processes in the umbilical cord, constricting it. Their actions also impair the production of the membrane around the baby.
Smokers have more viscous (thicker and stickier) blood than non-smokers, which is a risk factor for stroke in the newborn as well as for blood clots (thrombosis) in the placenta. When the mother quits smoking, the level of carbon monoxide drops quickly and is much lower after only a day, and her blood improves over the next several weeks.
Smoking results in retarded growth of the foetus and subsequently low birth weight. Low birth weight may have a lasting effect of the growth and development of the child. It is associated with an increased risk for early puberty, and in adulthood an increased risk for heart disease, stroke, high blood pressure, and diabetes. Women who quit early in their pregnancy have babies with birth weights similar to non-smokers.
Women who quit smoking during pregnancy reduce the risk reduce the risk of preterm membrane rupture, preterm delivery and low birth weight.
In general, quitting without using quitting aids (nicotine replacement therapy or bupropion (Zyban) is preferred. This means first options are quitting suddenly or cutting down over one to two weeks and then quitting.
At the moment, there is nothing to recommend one method over the other, although quitting suddenly is more popular. Withdrawal symptoms might cause some emotional stress to the mother, which for most people is worse in the first week, but they decrease over time and usually do not last more than a few weeks. However, continued smoking puts the bodies of both mother and child under physical stress. All the evidence points to quitting smoking being one of the most important ways to improve pregnancy outcomes.
The above exerpt is from here