Common workplace chemicals have been linked to an increased risk of male breast cancer. The research, published in the journal Occupational and Environmental Medicine, found male breast cancer incidence was particularly increased in motor vehicle mechanics, who were twice as likely to develop the disease.

Sara Villeneuve, Diane Cyr, Elsebeth Lynge and others. Occupation and occupational exposure to endocrine disrupting chemicals in male breast cancer: a case–control study in Europe, Occupational and Environmental Medicine, volume 67, pages 837-844, 2010 [abstract]. Green jobs, safe jobs blog.