2021: Count Down

Count Down cover, published by Scribner of Simon & Schuster, Inc. Photo by Sarah Howard.

2021 Count Down book by Shanna Swan, PhD with Stacey Colino published about declining sperm counts and EDCs.

The American College of Obstetricians and Gynecologists (ACOG) releases a revised Committee Opinion on Reducing Prenatal Exposure to Toxic Environmental Agents.

EHN EHN

Developing an EDC training portal - Share your input
by Sarah Howard on June 23, 2026 at 2:41 pm
HEEDS and the Intersectoral Center for Endocrine Disruptor Analysis (ICEDA) are collaborating to create an online training portal on endocrine disrupting chemicals (EDCs). We are gathering input to better understand needs, potential uses, and content priorities. Please help by filling out the survey!
New online course: EDCs 101
by Sarah Howard on April 29, 2026 at 5:41 pm
HEEDS has created an online course on endocrine disrupting chemicals and we are looking for people to try it out. This course is designed to break down how endocrine disrupting chemicals work inside the body and the supporting evidence about how these chemicals change the way we think about health.
Webinar recording: Prenatal exposure to organophosphate pesticides: health outcomes & potential mechanisms
by Sarah Howard on March 16, 2026 at 5:12 am
This May 19, 2026 webinar featured two early-career scientists who discussed their research on the health effects of prenatal exposure to organophosphate pesticides. Sponsored by the EDC Strategies Partnership and the HEEDS Young EDC Scientist Showcase. Watch the recording.

Chemicals in food are an overlooked threat to public health, scientists say
by Environmental Health Sciences Staff on July 9, 2026 at 7:40 pm
An article published in Nature Medicine highlights the ubiquitous presence of synthetic chemicals in the global food supply and emphasizes the need to transition to a safer, more sustainable food system. “Public health should be a priority for policymakers, and the importance of mitigating chemical exposures is still underappreciated.”
Men’s average testosterone levels have halved in last 50 years, say scientists
by EHN Curators on July 8, 2026 at 12:35 pm
Researchers warn of ‘major crisis in male reproductive health’ partly driven by obesity and diabetes.
Air pollution may cause childhood obesity by disrupting impulse control, study finds
by EHN Curators on July 7, 2026 at 11:57 am
Babies exposed to higher levels of neurotoxin more likely to have difficulty controlling impulses later, research shows.

Opponents call E.P.A. proposal on persistent PFAS 'dangerous'
by EHN Curators on July 10, 2026 at 12:00 pm
Speakers during an online public hearing Tuesday largely and roundly criticized the Environmental Protection Agency’s proposal to repeal federal drinking water limits for four per- and polyfluoroalkyl substances and delay the deadline for water utilities to comply with limits for related compounds by two years.
US Food and Drug Administration rejects petition to set PFAS limits in food
by EHN Curators on July 9, 2026 at 12:28 pm
Environmental protection agency and independent studies have found that food is the biggest source of PFAS chemical exposure.
EPA’s pesticide approvals prompt fears of PFAS on farms
by EHN Curators on July 8, 2026 at 12:25 pm
The agency’s actions come amid anger over a Supreme Court decision in a glyphosate case and an executive order over regenerative agriculture.