EDF Health

Sperm Concerns: Sons Affected by Mom’s Exposure to Forever Chemicals

By Lauren Ellis / Published: October 19, 2022

Illustration of gray sperm swimming toward a dark purple egg on a light purple background

By Lauren Ellis, MPH, Research Analyst, Safer Chemicals

What’s New: A peer-reviewed study by Danish researchers found that a male fetus who is exposed to PFAS (per- and polyfluoroalkyl substances—also known as “forever chemicals”) during early pregnancy is more likely to have lower sperm quality in early adulthood.

It’s the first study to explore the impact of exposure to more than two PFAS compounds (as measured in maternal blood samples during early pregnancy) on adult male reproductive hormones and sperm quality.

Why It Matters: Poor sperm quality is directly related to male infertility. In addition, it has been linked to other health problems such as testicular cancer, heart disease, and all-cause mortality.

This study adds to decades of literature linking environmental chemical exposures to negative impacts on reproductive health.

Key Lessons from the Study:

  • Women who were pregnant 20+ years ago had multiple types of PFAS in their blood. The study used data on a group of Danish women who were pregnant between 1998-2003. The women gave blood samples, which were then frozen and stored; 95% of those samples were taken in the first trimester of pregnancy.
  • In 2020-2021, researchers tested those maternal samples for 15 different PFAS compounds. They found 7 of the 15 in the bloodstream of nearly 90% of mothers in the study. The seven were: PFHxS, PFHpA, PFOA, PFOS, PFNA, PFDA, and PFUnDA.
  • Exposure to PFAS during pregnancy decreases the sperm quality of adult male offspring. Researchers found that both combined and single exposure to maternal PFAS concentrations during early pregnancy had a negative effect on the sperm quality—particularly sperm count, concentration, and movement—of adult male offspring.

Our Takeaway: The new study presents a startling finding—developmental exposures to chemicals are associated with long lasting harm, including impacts that can affect future generations. It also adds to the growing evidence of PFAS health risks and demonstrates the urgent need for more health-protective PFAS policies and regulations.

Next Steps: EDF and our partners are pushing EPA to revoke existing PFAS exemptions and require those PFAS (and new PFAS coming to market) to undergo a full safety review under the Toxic Substances Control Act, our nation’s primary chemical safety law.

It is critical that these evaluations also consider the cumulative risk of exposure to PFAS mixtures in the environment.

Note: In June 2021, EDF, with a group of health, environmental, and consumer organizations, sent a formal petition to FDA asking the agency to ban all PFAS  that accumulate in the body. That petition is still under review.

Posted in Emerging science, Regulation / Tagged , , , | Comments are closed

Unleaded Juice: FDA’s challenge of continuous improvement and compliance assurance

By Tom Neltner, Senior Director, Safer Chemicals Initiative / Published: October 2, 2022

Tom Neltner, Senior Director, Safer Chemicals

This is the sixth in our Unleaded Juice blog series exploring how the Food and Drug Administration (FDA) sets limits for toxic elements like lead, arsenic, and cadmium in food and the implications for the agency’s Closer To Zero program. 

A core tenet of FDA’s Closer to Zero program is the “Cycle of Continuous Improvement” represented by the image below on the program’s webpage. The four-stage, outer ring represents FDA’s process for revising its action levels for food contaminants. The inner, grey ring describes the agency’s on-going monitoring, research, and compliance program.


This approach makes sense, and we fully support it. However, the success of this approach relies on FDA addressing several significant structural weaknesses.

  • Future funding is not guaranteed: In March 2022, Congress appropriated $11 million in Fiscal Year 2022 (FY22) funding for FDA’s maternal and infant health work—in part to support the agency’s efforts to reduce arsenic, lead, and cadmium in children’s foods. Last year’s request and appropriations were a significant increase over previous years, but that funding level is not guaranteed for future years.
  • Action levels are guidance—not legally binding requirements: FDA’s action levels for contaminants in food are established in guidance. The guidance introduction makes it clear that “The contents of this document do not have the force and effect of law and are not meant to bind the public in any way, unless specifically incorporated into a contract.” It assumes that the food industry—from the largest multinational corporation to the smallest entrepreneur—will comply.
  • The agency has limited means to monitor compliance: FDA largely relies on physical inspections and market sampling, supplemented by voluntary reporting, to assure compliance with action levels. Inspections at high-risk facilities must occur every three years (but likely have been delayed due to the COVID pandemic). We understand that most facilities will see an inspector once every eight years. This is particularly problematic because FDA says it lacks the authority to require food companies to provide requested documents without the physical inspection, and the agency does not require ongoing testing and reporting by companies for action levels.
  • Action levels must be consistently strong enough to drive research and impact markets: FDA correctly points to its success in setting an action level for inorganic arsenic in infant rice cereal as a model to lower contamination. Unfortunately, the model assumes the action level for a contaminant is set low enough to result in research investments and increased product and ingredient testing and to provide FDA with sufficient information to act on problems. This is not the case for lead in juice.
     
    We explore each of these weaknesses below.

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Posted in FDA, Food, Lead, Public health, Unleaded Juice / Tagged , , , , | Authors: / Comments are closed

Unleaded Juice: FDA needs to start with public health—not market impact

By Tom Neltner, Senior Director, Safer Chemicals Initiative / Published: September 22, 2022

Tom Neltner, Senior Director, Safer Chemicals 

This is the fifth in our Unleaded Juice blog series exploring how the Food and Drug Administration (FDA) sets limits for toxic elements like lead, arsenic, and cadmium in food and its implications for the agency’s Closer To Zero program. 

FDA’s approach to setting draft action levels for lead in juice is based on two ill-conceived presumptions:

  • Action levels should not impact more than 5% of the market. Unfortunately, FDA does not appear to consider market trends or whether the products were made using best practices shown to reduce contamination.
  • Action levels should help ensure 90% of young children have a dietary intake of lead that is below FDA’s Interim Reference Level, the maximum daily intake from food. Unfortunately, this effectively ignores the top 10% or 2.4 million of the most-exposed young children.[1]

To its credit, the agency has shown it is willing to go beyond the 5% impact for three types of juices (grape at 12%, pomegranate at 6%, and prune at 6%),[2] and it has proposed the most protective lead-in-juice standards in the world. However, for a heavy metal like lead where relatively short-term exposures can result in long-term harm to young children’s developing brains, the current approach has serious weaknesses.

We think the agency should evaluate alternatives that impact more than 5% of the market and protect more than 90% of children. And when FDA evaluates impacts, it should assess the socioeconomic benefits of the alternatives. For substances like lead (and arsenic), these societal benefits can be quantified using established methods. In a previous blog, we showed that reducing young children’s overall dietary intake of lead by just 6% would yield $1 billion a year in benefits. The agency should compare these benefits to the investments that industry would need to make to achieve these action levels using best practices.

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Successful Denver Water Lead Reduction Program Seeks 12-Year Extension

By Roya Alkafaji / Published: September 22, 2022

Roya Alkafaji, Manager, Healthy Communities and Lindsay McCormick, Senior Manager, Safer Chemicals

Denver Water has one of the most successful lead service line (LSL) replacement programs in the country. Since it began the program in 2020, the utility has replaced nearly 14,000 LSLs—prioritizing lines to buildings serving vulnerable populations, such as child-care facilities. Denver Water has also distributed over 102,000 filters to local residents. EPA should continue to support their innovative approach.

Watch this video to learn more about Denver Water’s Lead Reduction Program.

In 2019, we blogged about a novel program that Denver Water designed to address the estimated 64,000 to 84,000 LSLs in its system. These lead pipes connect buildings to water mains under the street.  At the time, the water utility proposed to fully replace all LSLs in their entirety within 15 years under its Lead Reduction Program.

The utility decided to fund the work through water rates and bonds, hydropower production, and other sources. In addition, they proposed to provide filters to residents until six months after replacement of the LSL.

Critically, the program includes a comprehensive effort to engage local partners to reach all members of the community. For example, Denver Water partnered with CREA Results, a local community-based organization that is helping to engage and educate Spanish-speaking and immigrant communities on the risks of lead in drinking water and to ensure that residents understand the steps involved with LSL replacement in their neighborhoods. Denver Water’s program has emerged as a national model and its success is recognized by the Lead Service Line Replacement Collaborative and EPA (including its recent service line inventory guidance).

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Posted in Drinking water, Lead, Public health / Tagged , , , , | Authors: / Comments are closed

FDA Acknowledged Ortho-Phthalates Could Be Grouped Into Classes For Safety, Then Punted

By Tom Neltner, Senior Director, Safer Chemicals Initiative / Published: September 16, 2022

Maricel Maffini, consultant and Tom Neltner, Chemicals Policy Director

In May, FDA decided to allow continued use of nine ortho-phthalates in food packaging and processing equipment but punted on deciding whether or not using those phthalates is safe. We’ve written about the petitions that resulted in the decision, along with the agency’s decision to “abandon” the use of 19 other phthalates (here, here, here, and here). We’ve also written about how phthalates that industry and FDA say are no longer on the market are showing up in our food (here and here). Today, however, we focus on whether those nine phthalates are a class of related substances—and the implications for public health if they are.

FDA’s obligation to evaluate related chemicals as a class

FDA’s regulations state that additives “that cause similar or related pharmacological effects will be regarded as a class, and in the absence of evidence to the contrary, as having additive toxic effects.” In denying our petition, FDA acknowledged that some phthalates could be in a class of related substances. For example, FDA described studies showing that seven phthalates reduced testosterone production – an effect called antiandrogenicity – during fetal development. This caused malformation of the male reproductive system (primarily malformed genitals in male infants). The agency balked at declaring all phthalates anti-androgenic because four of them did not show that effect.[1]

But rather than move forward with a safety assessment of the use of the antiandrogenic phthalates as a class of chemicals with similar toxicity, FDA dropped the issue, implicitly sending the message the chemicals are safe. This is contrary to the agency’s obligation. When making a final decision on a food additive petition that allows the use of a substance, FDA must explicitly decide the use is safe after considering the cumulative effect of it and related substances in the diet.[2]

In contrast to FDA’s failure to act, the Consumer Product Safety Commission, responding to safety concerns, took action five years earlier and banned use of antiandrogenic phthalates in children’s products.

A phthalate scorecard: Where we stand on which phthalates can be used and their health effects

The table below provides a scorecard for the nine phthalates that remain in use. Of those substances, studies showed that seven were associated with developmental effects, including four which have antiandrogenic effects. Two phthalates were never studied for developmental effects.

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Consumers continue to rate chemicals in food as top food safety concern

By Tom Neltner, Senior Director, Safer Chemicals Initiative / Published: September 14, 2022

Tom Neltner, Senior Director, Safer Chemicals

For the eighth year in a row, consumers rated chemicals as their top food safety concern according to the annual industry survey of consumer perspectives on food issues. In the survey conducted in March 2022, 48% of consumers rated chemicals as their top category of food safety concern – about the same as 2021 – compared to 22% for foodborne illness from bacteria. The chemicals category includes: cancer-causing chemicals (15%); pesticides (13%); food additives and ingredients (11%); and heavy metals (9%).

Last year, we examined the International Food Information Council’s (IFIC) 2021 Food and Health Survey in detail. Our takeaway was that consumers continue to be concerned about chemicals in food, partly because they lack confidence that the federal government is actually ensuring additives—like artificial sweeteners—are safe. (Nearly 70% didn’t know that’s the government’s role).

As a result, consumers do their best to protect their health and safety by avoiding ingredients that sound like chemicals—the only way they see to control the perceived risk. In reaction to consumer concerns, some food companies have undertaken “clean label” programs, which, according to a 2017 analysis by Center for Science in the Public Interest, either remove these ingredients (which can be helpful if the removed ingredients are unsafe) or use names that do not sound like chemicals (which obscures the facts and can be misleading).

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