Diesel fumes implicated as likely cause of lung cancer

After pooling a staggering amount of data on lifetime work histories and tobacco exposure from 13,304 cases and 16,282 controls in 11 previous studies (the SYNERGY project), Olsson et al conclude that yes, breathing diesel exhaust probably causes lung cancer. But the highest-exposure quartile's odds ratio was only 1.3, compared to the unexposed people. See you at the monster truck rally. AJRCCM 2011;183:941-948.