Birth injuries are commonly known side-effects of smoking while pregnant. Examples include underweight babies, sudden infant death syndrome, heart defects and other problems. A new smoking-related birth injury is now being researched. Researchers have found that smoking can have an effect on the thyroids of babies, as well as the mothers who smoke during pregnancy. Thyroid problems during pregnancy can lead to low birth weight, brain injury, premature birth, and even miscarriage. For the full story, click here.