Healthy Environment and Endocrine Disruptor Strategies
HEEDS is a non-profit coalition of scientists dedicated to improving communication, coordination and collaboration in the field of endocrine disrupting chemicals (EDCs). HEEDS is developed by scientists for scientists. There are no membership fees. HEEDS works to move EDC science forward, increase collaborations across scientific disciplines, communicate results and improve policy and regulations.
We are now accepting applications for the 2026 Lou Guillette Jr. Outstanding Young Investigator Award!
Due Sept. 30, 2026.
Congratulations to our EDC-North Carolina poster award winners!
Lou Guillette Jr. Memorial Symposium
Recordings and excerpts of the meeting are available online
EDC Policy News
Events
EHN EHN
- Coalition seeks temporary halt to California packaging lawby EHN Curators on August 25, 2026 at 3:50 pm
The National Association of Wholesaler-Distributors and 17 states sued California, arguing the law is unconstitutional.
- Leaked memo shows how U.S. aims to weaken global limits on plastic pollutionby EHN Curators on August 24, 2026 at 12:20 pm
A memo reviewed by The Washington Post, circulated by U.S. diplomats, comes as negotiations over a plastics treaty reach a critical point.
- Study finds PFAS destruction gap widens as regulators tighten forever chemical limitsby EHN Curators on August 21, 2026 at 12:15 pm
A new report warns that widely used PFAS treatments only concentrate the chemicals, not destroy them, as EU and U.S. limits tighten sharply.
- Opinion: Congress must renew Toxic Substances Control Act feesby EHN Curators on August 20, 2026 at 8:08 pm
When I learned asbestos was only truly restricted in 2024 when new uses were banned under the reformed TSCA, I was speechless, yet grateful there is now a law keeping it out of new building materials.
- Amara’s Law made Minnesota the strictest state on PFASby EHN Curators on August 20, 2026 at 11:57 am
As the U.S. Environmental Protection Agency narrows its definition of PFAS and approves new PFAS-containing pesticides, Minnesota is moving in the opposite direction under Amara’s Law, named for a 20-year-old who died of liver cancer linked to 3M’s “forever chemicals.”
EHN EHN
- Course: Plastics, microplastics, and human healthby Sarah Howard on August 25, 2026 at 12:19 pm
The Physician and Scientist Network Addressing Plastics and Health (P-SNAP) is holding an online course on Tuesdays from Oct. 6 to Nov. 24 geared to physicians, researchers and healthcare personnel. Info/register here.
- Lou Guillette, Jr. Outstanding Young Investigator Awardby Sarah Howard on July 24, 2026 at 12:33 pm
Due Sept. 30! HEEDS is accepting applications for the 2026 Lou Guillette, Jr. Outstanding Young Investigator Award. Sponsored by Healthy Environment and Endocrine Disruptor Strategies (HEEDS), the award honors the late scientist and mentor, Lou Guillette, Jr. Information here.
- Plastics and human health symposiumby Sarah Howard on July 15, 2026 at 12:36 pm
The third annual symposium on plastics and health will be held at NYU and streamed online on Sept. 22-23, 2026. The event will focus on individual environments where plastics abound and discuss opportunities and effects of solutions, focusing on the science-policy interface. Sponsored by NYU Langone Health's Center for the Investigation of Environmental Hazards (CIEH) and the Food Packaging Forum. Register here.
- Webinar: Glyphosate science: cancer, neurotoxicity & endocrine disruptionby Sarah Howard on July 15, 2026 at 10:54 am
This Oct. 6 webinar features Dr. Daniele Mandrioli, who will discuss recent findings from the Global Glyphosate Study, and Dr. Lianne Sheppard will discuss the findings presented at the Seattle Glyphosate Symposium and the resulting consensus statement. Sponsored by the Collaborative for Health and Environment (CHE).
- New online course: EDCs 101by Sarah Howard on June 22, 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.
HEED The Call
Your donation will help HEEDS provide education and outreach activities, scientific reports and publications, scientific workshops and webinars as well as other activities and programs to reduce exposure to EDCs and improve health. We are a program of Environmental Health Sciences.
Photo of elk by HEEDS Elder Pete Myers, PhD.










