Researchers announced they found the first direct evidence that fetuses of women who smoke actually metabolize cancer-causing agents contained in tobacco.

The study goes beyond what scientists have known for years - that smoking by pregnant women causes babies to be born smaller, sicklier, at a higher risk of sudden infant death syndrome and - in some cases - even addicted to nicotine.The study, conducted by University of Minnesota professor Stephen S. Hecht and sponsored by the National Cancer Institute, examined the first urine produced by 48 German newborns. It was presented Sunday at the annual meeting of the American Chemical Society in Boston.