New Delhi [India] Aug 22 (ANI): The dangers of smoking are many but the problem gets exponential when pregnant women opt for it as their unborn babies are also at risk. In spite of being aware of the ill effects associated with smoking including several forms of cancer the habit is still prevalent among many including pregnant women. Smoking during pregnancy accounts for an estimated 20 to 30 per cent of low-birth-weight babies. So all the pregnant women should keep the following in mind before lighting a cigarette. -- According to Dr. Shobha Gupta Medical Director & Infertility Specialist from