Sima P. Porten, MD, MPH

Sima P. Porten, MD, MPH, discusses the need to better understand how genetic makeup influences how individuals process environmental toxins.

"They are risking their own lives for their job, so it's the part of the whole community to do our best to try to keep them safe," says Sima P. Porten, MD, MPH.

"There is evidence for a direct link between the exposures you get by doing your job as a firefighter and then developing cancer down the road," says Sima P. Porten, MD, MPH.