A new study published in the journal Pediatrics has found that women who consume high quantities of caffeine during pregnancy and early in their children's infancy do not put their babies at higher risk of suffering from colic or sleep disturbance.
The study followed mothers of babies born in Pelotas, Brazil in 2004. NPR reports on the findings:
"When we planned the study, we worked with the hypothesis of association between heavy maternal consumption of caffeine and higher infant awakenings at night," Marlos Rodrigues Domingues, a researcher at Brazil's Universidade Federal de Pelotas and co-author of the study, tells Shots in an email.
It's not clear why the infants' sleep wasn't affected. The babies might have developed a tolerance to caffeine while in the womb, Rodrigues says. But other studies have found no caffeine metabolites in the urine of babies whose mothers drink coffee, suggesting that the babies don't absorb caffeine the way older children and adults do.
Image: Cup of coffee, via Shutterstock.