Dr. Swan has worked for over twenty-five years to understand the threats posed by chemicals to our environment and our health, and, when necessary, to develop new paradigms to assess their risks. Of most concern to Dr. Swan are the chemicals that our bodies can confuse with its own hormones (the “endocrine disrupting” chemicals). At the Icahn School of Medicine at Mount Sinai, Department of Environmental Medicine and Public Health, Dr. Swan is working with a wide range of collaborators, including epidemiologists, biostatisticians, toxicologists, geneticists and systems biologists, to conduct studies and develop methods to evaluate the risks from such chemicals — methods that are sensitive enough to tease out the often subtle health effects of complex mixtures.