[5] At the time, the incidence of breast cancer was rising in the United States, and Laden wondered whether specific exposures/environments made people more susceptible to the disease.

Whilst her results were inconclusive, they did not indicate environmental risk factors played a considerable role in the disease.

[6] She went on to show that long-term rotating night shift work was associated with a higher incidence of breast cancer, and that women who did shiftwork younger were more at risk.

[14] She has studied how diesel exhaust exposure impacts lung cancer mortality in America's trucking industry.

[15] By combining satellite imagery (the normalized difference vegetation index), physical examinations and cognitive tests, Laden research showed that access to urban green space could improve processing speed, attention span and cognitive function.