A meta-analysis of randomized, controlled studies was published in Epidemiology (May 2012 – Volume 23 – Issue 3 – p 402–414) looked at probiotic supplementation in pregnant women, and in infants shortly after birth, and the relation to the incidence of allergic dermatitis in their infants after birth. A total of 14 studies were included in the analysis. Overall, the studies show that probiotic supplementation was helpful in preventing atopic dermatitis.