A food-based protocol to help your body clear microplastics

The average person may be ingesting roughly a credit card's worth of microplastics every few months, arriving through drinking water, food packaging, and clothing fibers. These particles aren't inert: they carry endocrine disruptors like BPA and phthalates that accumulate in organs and the bloodstream. While the intestinal tract clears some plastic particles directly, the associated chemicals need a different route out, and a specific dietary combination can help open that route.

Reducing exposure matters, but it isn't the whole picture, since microplastics are already so widespread in water, packaging, and textiles that avoidance alone can't get anyone to zero. That makes the question of how the body actually clears what does get in just as important as cutting off new sources.

The master detox switch: NRF2

At the center of the body's chemical clearance system is a pathway called NRF2, which controls roughly 250 genes involved in detoxification, antioxidant defense, and inflammation control. When NRF2 is active, the liver upregulates phase two detox enzymes, including NQO1, heme oxygenase, and glutathione, which convert fat-soluble toxins into water-soluble forms the body can actually excrete. When NRF2 is suppressed, that clearance capacity drops.

Horseradish as an NRF2 activator

Horseradish, along with wasabi and mustard, contains a compound called 6-MSITC. A 2025 narrative review in the Journal of Functional Foods found that 6-MSITC activates the NRF2 signaling cascade and increases intracellular glutathione production, the body's master antioxidant. Rather than supplementing glutathione directly, which often runs into absorption problems unless it's liposomal or IV-delivered, activating the pathway tells the body to produce more of it on its own. The practical version of this is simple: one tablespoon of real prepared horseradish (not the mayonnaise-based creamy kind) alongside a protein-rich meal, paired with sulfur-containing foods like eggs, garlic, and onions that supply the raw material glutathione production actually needs.

Broccoli sprouts for a second angle of attack

Sulforaphane, found in cruciferous vegetables, activates the same NRF2 pathway through a related mechanism, and broccoli sprouts contain roughly 100 times more of it than mature broccoli. Sulforaphane specifically ramps up glutathione S-transferase, an enzyme that binds directly to BPA, BPS, and phthalates and makes them water-soluble enough to excrete. In one trial conducted in a heavily polluted region of China, a daily broccoli sprout beverage increased benzene excretion by more than 26 percent within 24 hours. Sprouts are easiest eaten raw or lightly steamed, since cooking destroys the myrosinase enzyme needed to convert the sulforaphane precursor; anyone using a supplement instead should confirm it includes myrosinase.

Soluble fiber as a physical trap

While NRF2 activation helps the body process chemical byproducts, the plastic particles themselves call for a different strategy: soluble fiber. Pectins, inulin, and glucomannan, found in apples, berries, onions, and flaxseed, form a viscous gel in the gut that can trap microplastic particles before they cross into the bloodstream. Beta-glucan, found in mushrooms, oats, and seaweed, appears in research to increase excretion of PFAS, or forever chemicals, through a bile acid mechanism similar to how cholesterol-lowering agents work. Total soluble fiber intake doesn't need to be extreme, somewhere between 10 and 40 grams a day, depending on individual digestion, appears to be a reasonable working range.

Putting the full stack together

The complete protocol layers all three mechanisms into a single, food-first routine rather than requiring specialized supplements:

• Activate NRF2 from two angles: one tablespoon of horseradish, wasabi, or mustard with a main meal, plus a handful of raw broccoli sprouts
• Supply the raw materials: pair that meal with sulfur-rich foods like eggs, garlic, and onions
• Trap and eliminate: keep soluble fiber intake high throughout the day, from sources like berries, flaxseed, mushrooms, or psyllium, which can also bind microplastics from something just consumed, like water from a plastic bottle
• Sweat it out: sauna sessions or vigorous exercise support elimination of plastic-associated chemicals through sweat
• Reduce incoming exposure: filter drinking water, swap plastic containers for glass, and avoid microwaving food in plastic

What the evidence does and doesn't show

It's worth being precise about what's established versus what's still emerging. The link between 6-MSITC and sulforaphane activating NRF2, and NRF2 in turn upregulating phase two detox enzymes, is well documented mechanistic biology, and the benzene excretion trial with broccoli sprout beverage is a real measured outcome. The research on soluble fiber directly removing microplastic particles from human tissue is still early; what's solid is that soluble fiber forms a gel matrix in the gut and that a high-fiber diet supports detox pathways broadly, so the fiber strategy rests on sound biological logic even where the specific microplastic-binding research is still developing. None of this replaces reducing exposure in the first place, which remains the highest-leverage move available.

The takeaway

None of these steps require expensive products. A meal built around horseradish, broccoli sprouts, sulfur-rich foods, and a base of soluble fiber activates the body's own detox machinery from multiple angles at once, while sweating and reducing new plastic exposure round out the rest of the approach.