Workers exposed to a cocktail of chemicals may be suffering far more harm than previously considered, a study suggests. Results from a study of male rats published in the journal Environmental Health Perspectives, indicate that assessing the risk of chemicals one compound at a time will underestimate potential harm.

Sofie Christiansen and others. Synergistic disruption of external male sex organ development by a mixture of four anti-androgens, Environmental Health Perspectives, 2009 [abstract]. Full text [pdf]. Ecologist. Risks 424.