Dr. Shana Swan
Epidemiologist / Researcher
Reproductive epidemiology and environmental health
About the expert
Focus: Endocrine-disrupting chemicals and human reproductive health
Reproductive epidemiologist with decades of research on phthalates, bisphenols, and other endocrine-disrupting chemicals. Author of Count Down. Best known for documenting trends in sperm counts and the role of common-exposure chemicals in fertility, urogenital development, and hormonal health.
Why this matters
Epidemiologist and reproductive-health researcher best known for work on endocrine-disrupting chemicals and declining sperm counts. Swan is Professor Emerita at Mount Sinai's Department of Environmental Medicine and Public Health, author of Count Down, and has published widely on phthalates, bisphenols, and anogenital distance. Her research sits largely within mainstream toxicology, particularly around phthalates and reproductive health. Her recommendations for reducing exposure generally involve low-risk behavioral changes, though some of the detox-oriented framing extends beyond what current clinical evidence can establish.