It's the question many ask: Is there a safe amount to drink during pregnancy? A new study published in Advances in Pediatric Research suggests the answer is no. 

Susan Astley Hemingway, professor of epidemiology and pediatrics at the UW Schools of Public Health and Medicine, is the lead author. The study examined both identical and fraternal twins. Identical twins, who have the same genetic makeup, were affected in the same way. However, fraternal twins, who had the same amount of alcohol exposure over the same period of time, had different levels of damage. One could have fetal alcohol syndrome (FAS), and the other would be fine. 

Astley Hemingway says the main takeaway here is that the safe amount of alcohol is none at all. See related news release.