Although smoking during pregnancy is reported to have an adverse effect on foetus health, a new study shows that regular intake of Vitamin C by smoker mom-to-be may help reduce harm done to infant's lungs after birth.

The study showed that at three months of age, infants whose mothers took 500 mg of Vitamin C per day in addition to their prenatal vitamin had significantly better forced expiratory flows (FEFs) that measure how fast air can be exhaled from the lung and can detect airway obstruction.