Health and Human Services Secretary RFK Jr. and EPA Administrator Lee Zeldin are declaring a war on microplastics. 

These tiny bits of plastic, which are less than 5 mm in size, can persist in our environment for hundreds or thousands of years. They may also build up in our bodies, our hearts and our brains, causing untold damage.                           

For the first time, the EPA is adding microplastics and pharmaceuticals to its Contaminant Candidate List for drinking water, which will help to prioritize funding and pave the way for potential future regulation involving Congress. 

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HHS is also launching the Systematic Targeting of Microplastics — or STOMP — to study how microplastics accumulate in the body.

Kennedy spoke with Fox News in an exclusive interview accompanying the EPA/HHS announcement.

“Microplastics, which are less than 5 mm in size, can persist in the environment for hundreds or thousands of years,” said Dr. Marc Siegel. “They may also build up in our bodies, our hearts and our brains, causing untold damage.                     (iStock)

“We do not have the science that distinguishes between the impacts of these different types of plastics, and maybe if we identify those impacts, the damaging ones can be immediately eliminated, because you can replace them with something else,” he said.

“Our job — and we are really at the limit of our power right now — is to try to answer those questions before we take another action.”       

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Kennedy pointed to emerging science suggesting microplastics’ direct impacts on public health. 

“Some of them may be benign – others are very, very harmful,” he warned. “The science shows if they cause inflammation, they cause oxidative stress.”

“As a body, they are endocrine disruptors, so they interfere with fertility,” he added.             

For the first time, the EPA is adding microplastics and pharmaceuticals to its Contaminant Candidate List for drinking water, which will help to prioritize funding and pave the way for potential future regulation involving Congress.  (iStock)

As emerging research suggests a higher risk of heart attack, stroke and neurodegenerative disease when microplastics are present at the cellular level, “the time to act is now,” according to Dr. Leonardo Trasande, a professor of pediatrics and population health at NYU Grossman School of Medicine.

During a panel accompanying the announcement, Trasande compared the issue to efforts to reduce lead exposure in the 1970s, when the government took action as soon as the danger was identified, even before all research was complete.

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Kennedy, who has a long history of fighting chemicals in the environment, blames big businesses for causing the problem and wants them to clean it up. “That’s a lesson we are all supposed to have learned at kindergarten – that you clean up after yourself, you don’t force the public to do it.”

The same approach applies to pharmaceuticals that make their way into the environment, he noted.

EPA Administrator Lee Zeldin holds a microplastic sample during an announcement at EPA headquarters in Washington, D.C., on April 2, 2026. (Ken Cedeno/Reuters)

“Particularly for our children, it’s very alarming. They are swimming around now in a toxic soup. It’s coming from everywhere,” Kennedy warned. “It’s coming from their food. It’s coming from agriculture. It’s coming from the air and water, and it’s coming from pharmaceutical drugs.

“Lee has directed his agency under President Trump to do this study so we can start regulating the discharge of these chemicals,” he went on. “A lot of them you can remove through carbon technology and other technologies.”

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Administrator Zeldin said he believes the fight against microplastics is a bipartisan issue. He is calling for more education and transparency when it comes to microplastics and public health, cautioning against the federal government proposing a one-size-fits-all solution. 

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“You want to be able to get the answers, you want to see the gold-standard science,” he said. “You demand radical transparency. You’re looking through the website, and it’s ignoring what you came to that web page to look for. I feel like there’s a communication gap – and when there’s a communication gap, there’s a trust gap.”

EPA Administrator Lee Zeldin speaks alongside HHS Secretary Robert F. Kennedy Jr. during the microplastics announcement at EPA headquarters in Washington, D.C., on April 2, 2026. (Ken Cedeno/Reuters)

Zeldin and Kennedy have been working closely under President Trump’s Make America Healthy Again agenda and say they enjoy working together. 

“There’s no American in this country who can’t get heard somehow by Secretary Kennedy, and it’s just an honor to serve alongside him,” Zeldin said.

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Kennedy added, “I like everybody in that Cabinet, but Lee and I work with particular closeness, and I’ve really enjoyed the relationship.”                                           

It is clear they would like this relationship to continue, even if their roles change. “You never know what’s going to happen,” Kennedy said.