When women take a supplement of the omega 3 fatty acid DHA during pregnancy, their babies have fewer cold symptoms and shorter illnesses, new research indicates. At 1 month and 3 months of age, about 38 percent of babies exposed to docosahexaenoic acid (DHA) in the womb experienced cold symptoms, compared to about 45 percent of the babies whose mothers were given a placebo supplement while they were pregnant. “The data suggested that for most of the symptoms we looked at, duration of symptoms was less when mothers received DHA. And, in the case of colds, the probability of a cold was slightly less. The effects seemed to be strongest early on after birth,” said study senior author Usha Ramakrishnan, an associate professor in the Hubert Department of Global Health at the Rollins School of Public Health at Emory University in Atlanta.