could be people are -- there's some amount of literature that perhaps there's a difference in symptomologyrticularly the symptoms that african-americans feel or are willing to admit compared to whites. so there has been some work to look at the differences there. so the fiscal nature of it so part of it, but there's also some links, a growing body of literature that shows a link between mental health and physical health. a good example is depression and diabetes. we're not quite sure what the connection is. is people are diagnosed with the disease, and then people are depressed or if there's a physiological pathway between that disease and physical depression. so there are a number of reasons why we can see that connection. >> doctor you have done some significant research on fetal alcohol syndrome in the african american community. talk a little bit about that. >> it turns out that fetal alcohol exposure is the leading cause -- or attention deficit hyperactivity, learning disorders, and mild intellectual disability in speech and language problems. those are the four most common problems t