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The team analyzed blood samples from more than 1,800 individuals and uncovered a disturbing pattern that officials can no longer ignore.
People with the highest levels of PFAS chemicals in their blood were found to have roughly twice the odds of being diagnosed with multiple sclerosis compared to those with the lowest levels.
PFAS chemicals, often called “forever chemicals,” are commonly found in nonstick cookware, stain resistant fabrics, food packaging, and cleaning products. Once inside the body, they do not break down.
Multiple sclerosis is a devastating disease that damages the protective coverings of nerve fibers. Patients can suffer numbness, muscle weakness, difficulty walking, vision loss, and in severe cases, permanent neurological damage.
The study, published in Environmental International, examined both PFAS and PCBs, another group of industrial chemicals that were banned decades ago but still remain in the environment.
PCBs were once widely used in electrical equipment until the federal government finally acknowledged they caused cancer, immune suppression, and neurological harm. By then, the damage was already done.
These chemicals do not disappear. They accumulate in soil, water, animals, and human bodies across generations.
Lead author Kim Kultima explained that individuals with elevated levels of PFOS, a specific PFAS compound, and certain PCB byproducts had dramatically higher odds of developing multiple sclerosis.
Even more concerning, researchers discovered that chemical exposure could override genetic protection.
Individuals who carried a gene variant believed to protect against MS actually showed increased risk when exposed to higher PFOS levels.
In other words, chemical exposure beat genetics.
Chemical Companies Knew While Regulators Did Nothing
This is where the story becomes infuriating.
Internal documents reveal that DuPont and 3M were aware as early as 1970 that PFAS chemicals were “highly toxic.”
Yet production continued. Profits soared. And regulators stayed silent.
The EPA was officially alerted to PFAS dangers in 1998 after a lawyer handed over confidential DuPont documents detailing contamination linked to PFOA chemicals.
Nothing meaningful happened for decades.
It was not until April 2024 that the Biden administration finally set federal limits on PFAS in drinking water. That delay allowed widespread contamination to spread unchecked.
The EPA estimates that more than 100 million Americans now receive drinking water that violates these standards.
Utilities were given five years to comply, meaning Americans will likely pay higher water bills to clean up a problem they never caused.
The Trump administration chose to keep those limits in place, recognizing that real standards are necessary to address the crisis.
Dr. Marc Siegel, Fox News senior medical analyst, noted that multiple sclerosis is “somewhat autoimmune and somewhat post-inflammatory,” with Epstein-Barr virus infection greatly increasing MS risk.
While the study shows correlation rather than direct causation, chemical companies are already using that technical distinction as legal cover.
RFK Jr. Takes on a System That Failed Americans
Health and Human Services Secretary Robert F. Kennedy Jr. has made confronting chemical contamination a central focus of his mission.
His Make America Healthy Again agenda identifies PFAS, microplastics, and toxic food packaging as major threats to children’s health.
The MAHA Commission’s May 2025 report declared American children “the sickest generation in American history” and pointed directly at environmental toxins as key drivers of chronic illness.
Kennedy warned that contamination does not stay confined to factories.
“Microplastics and chemicals from food production, assembly lines and packaging not only end up in our food, they also contaminate our soil, our water, our oceans, and from there, they re-enter the food supply,” Kennedy told attendees at a Chemicals of Concern Policy Summit.
The chemical industry, meanwhile, continues to insist it will regulate itself. The American Chemistry Council claims manufacturers are voluntarily reducing emissions.
History suggests otherwise.
The Swedish researchers emphasized that Americans are exposed to chemical mixtures, not isolated substances. Regulators ignored this reality for decades.
The combined effect of multiple toxins compounds the damage.
This crisis was not unavoidable.
It was allowed.
Government agencies had the evidence.
They had the authority.
They chose industry over families.
Now Americans are left paying the price for decades of regulatory failure.
