Vitamin C may reduce harm of smoking during pregnancy

Women who do not quit smoking during pregnancy may reduce the harm to their baby's lungs by taking vitamin C, according to an NHLBI-funded randomized, controlled trial. The researchers presented their findings during the annual meeting of the American Thoracic Society in May. 

In a 2014 study, also funded by NHLBI and published by The Journal of the American Medical Association, the researchers reported that daily supplemental vitamin C in pregnant women who could not quit smoking improved their newborn's pulmonary function as measured by passive respiratory compliance and the time to peak tidal expiratory flow to expiratory time. At one year, the study also found that babies whose mothers took vitamin C were less likely to develop wheeze.