A new report shows that more than one in five pregnant white women smoke cigarettes...
That's significantly higher than use among other races.
Hispanic women were less likely than their peers to use alcohol or smoke while pregnant.
The Substance Abuse and Mental Health Services Administration conducted the 10-year study on the habits of pregnant women.
The government agency says the use of alcohol, tobacco and drugs while pregnant is especially risky to unborn children.
The agency is using the data to promote awareness.