I'd say about 20 percent of the cases I see, we never figure out where (the problem) came from.

It's not one number. When a doctor is looking at the numbers on a chart, he's looking at risk factors, family history, what's the person taking, what does the person need today in terms of interventions.

Children over 12 years of age who have fetal alcohol syndrome develop an array of devastating problems. These include mental health problems, disruptive school experiences, trouble with the law, inappropriate sexual behavior and alcohol and drug addiction.