Author: PRHE

PRHE’s mission is to create a healthier environment for human reproduction and development through advancing scientific inquiry, clinical care and health policies that prevent exposures to harmful chemicals in our environment.

CRAs can help EPA more accurately estimate risks from toxic chemical exposures

~ PRHE

When a nail salon worker heads home after work, she’s probably carrying more than her paycheck. She is also carrying phthalates — a class of toxic chemicals that contaminates people via nail polish, cosmetics, cleaning supplies, plastics, and food. One nail salon worker is exposed to multiple chemicals from many different sources, yet regulators like … Continue reading CRAs can help EPA more accurately estimate risks from toxic chemical exposures

Makers of PFAS ‘forever chemicals’ covered up the dangers

~ PRHE ~ 1 Comment

Widely used in clothing, household products and food, they resist breaking down in the environment The chemical industry took a page out of the tobacco playbook when they discovered and suppressed their knowledge of health harms caused by exposure to PFAS (per- and polyfluoroalkyl substances), according to an analysis of previously secret industry documents by … Continue reading Makers of PFAS ‘forever chemicals’ covered up the dangers

EPA moves to further limit deadly methylene chloride

~ PRHE

EPA today issued a proposed rule that would further limit the deadly chemical methylene chloride, proposing to ban the use of methylene chloride for all consumer uses and most industrial uses. EPA says the banned uses account for 52% of current methylene chloride production. In response, Tracey J. Woodruff, PhD, former EPA senior scientist and … Continue reading EPA moves to further limit deadly methylene chloride

Briefing Capitol Hill on why EPA must use best available science

~ PRHE

The PRHE team went to Washington, DC last week to brief lawmakers and policy staff on how EPA can use best available science to improve the way it evaluates chemicals for potential human health harm for the Agency to better protect health, communities, and the environment.  Moderated by Tracey J. Woodruff, PhD, MPH, PRHE’s director, UCSF … Continue reading Briefing Capitol Hill on why EPA must use best available science

Are “safe” exposure levels really “safe”?

~ PRHE ~ 5 Comments

Health risk assessment is the method that regulators use to determine whether chemicals in the environment pose a risk to people’s health and how much exposure to the chemical produces these effects. Unfortunately, current human health risk assessments don’t capture everyone’s risk level. Our recent paper, Application of Probabilistic Methods to Address Variability and Uncertainty … Continue reading Are “safe” exposure levels really “safe”?

With chemicals that can harm you, one size does not fit all

~ PRHE ~ 3 Comments

When the U.S. Environmental Protection Agency (EPA) evaluates chemical risks, it assumes for the most part that we are all the same. Or, rather, that some of us might be a little bit more sensitive than others. Ten times more sensitive, to be specific. But that’s not exactly true. When it comes to chemicals in … Continue reading With chemicals that can harm you, one size does not fit all

The weak link: gaps in exposure assessments

~ PRHE ~ 5 Comments

Protecting the public from the most concerning environmental chemicals and contaminants involves many individual steps. For example, when an agency like the US EPA or FDA evaluates a chemical used in consumer products, they want to evaluate:  the hazards associated with that chemical,   how that chemical causes harm, how much of the chemical is released … Continue reading The weak link: gaps in exposure assessments