The researchers used information about the diet of the mother and the birth details collected over ten years. Nearly 60,000 cases of pregnancy were included in the study. All sources of food included caffeine are monitored in this study: coffee, tea, carbonated beverages, and foods including cakes containing cocoa, desserts and chocolate.
According to researchers, caffeine consumption is strongly correlated with cigarette smoking, a cause of increased risk of preterm birth and small babies at birth conpared with age at giving a birth (SGA). In this study, the researchers found no association between total caffeine or caffeinated coffee with preterm birth but found an association between caffeine and SGA. This link persists even with non-smoking mothers, which means that the caffeine can affect a child's weight at birth.
In fact, they have noticed that caffeine from all sources reduced birth weight. For children weighing expected average (3.6 kg), every 100 mg of caffeine per day is equivalent to decreasing the 21-28 g. Caffeine from all sources prolonging the pregnancy about 5 hours for each 100 mg caffeine / day, but the amount of caffeine from coffee lasted even longer the pregnancy - prolonging 8 hours for each 100 mg caffeine / day. Children with SGA have a higher risk of health problems with short term and long term.