Microplastics Are in Your Blood — Here’s What You Can Actually Do About It

A few years ago, the idea of microplastics in the human body felt like a distant concern — something happening at a scale too small to worry about, in bodies of water too far away to affect your daily life. That comfortable distance has since collapsed.

In 2022, researchers published the first study confirming microplastics in human blood — finding them in 77% of participants. Subsequent studies have found them in breast milk, placentas, lung tissue, and most recently, arterial plaque. A 2024 study published in the New England Journal of Medicine found that patients with microplastics in their artery walls had a significantly higher risk of heart attack, stroke, and death over three years.

This is no longer a precautionary tale. It’s a current reality. And while we can’t eliminate exposure entirely — microplastics are now ubiquitous in air, water, soil, and food — the research gives us a clear picture of where our biggest exposures come from. That means we have real, actionable ways to reduce them.

What the Research Actually Shows

Let’s be honest about where the science currently stands. We know microplastics are present in human bodies at measurable levels, and the research linking them to health outcomes is building rapidly. The cardiovascular study is significant. So is research linking certain plastics and associated chemicals (like BPA and phthalates) to hormonal disruption, inflammatory markers, and reproductive health effects.

What we don’t yet have is a full picture of dose-response relationships — exactly how much exposure over how long produces what specific outcomes. This is an active area of research. What we do have is enough to act on the precautionary principle: reduce exposure where you reasonably can, using methods that don’t require you to overhaul your entire life.

The good news is that the highest-impact changes are also some of the most accessible ones.

Your Biggest Sources of Exposure

Research consistently points to a few main vectors: drinking water (both tap and bottled), food stored or heated in plastic containers, indoor air (where synthetic fibers shed microplastic particles), and sea salt and seafood. Of these, drinking water and food storage are the areas where individual action produces the clearest reduction in exposure.

It’s worth noting that the World Health Organization flagged drinking water as a primary exposure source years ago, and more recent research has reinforced this. A single liter of bottled water contains on average 240,000 plastic particles, according to a 2024 Columbia University study — far more than previously estimated, and including nanoplastics small enough to cross cellular membranes.

Start Here: Your Water

If you’re going to make one change, make it your drinking water. A quality water filter is the single highest-impact action for reducing microplastic ingestion.

Reverse osmosis filtration is the most effective, removing the vast majority of microplastics and nanoplastics. Countertop and under-sink systems are widely available and have come down significantly in price. A quality activated carbon filter (like a Berkey or similar gravity filter) also provides meaningful reduction at a lower upfront cost, though not to the same degree as reverse osmosis.

If you currently drink primarily bottled water for quality reasons, this is especially worth attention — bottled water consistently shows higher microplastic counts than well-filtered tap water.

Food Storage and Packaging Swaps

Stop heating food in plastic. This is the highest-leverage swap in your kitchen. Heat accelerates the leaching of plastics into food dramatically — even plastic containers labeled “microwave safe” (which means only that they won’t melt, not that they won’t leach). Switch to glass, stainless steel, or ceramic for anything that gets heated or stored hot.

Limit canned foods or choose BPA-free cans. The lining of many food cans contains epoxy resins derived from BPA. Choosing BPA-free alternatives or replacing some canned goods with glass-jarred equivalents reduces this exposure.

Avoid storing acidic foods in plastic. Tomatoes, citrus, vinegar-based foods, and anything with high acidity increases plastic leaching. Glass or ceramic containers for these foods makes a meaningful difference.

Use paper or cloth bags for produce. Single-use plastic produce bags are a small but consistent source of contact exposure. Reusable mesh or cloth bags are an easy swap.

Indoor Air Quality

Indoor air is an underappreciated source of microplastic exposure. Synthetic fabrics — polyester, nylon, acrylic — shed plastic microfibers as they move and wear. Synthetic carpeting is a significant contributor to household microplastic load. Dust, which accumulates on every surface, is now understood to be a primary pathway for microplastic ingestion, particularly in households with children who spend time on floors.

Additional High-Impact Swaps

Sea salt alternatives. Sea salt contains microplastics at higher concentrations than other salt varieties. Himalayan pink salt or rock salt are lower-exposure alternatives for everyday cooking.

Natural fiber clothing and bedding. Cotton, wool, linen, and hemp shed far fewer microfibers than synthetic fabrics. Prioritizing these materials for what touches your skin most — bedding, loungewear, undergarments — reduces both ingestion and skin contact exposure.

Reduce single-use plastic packaging overall. Every piece of plastic you handle represents a potential exposure pathway. Buying in bulk using your own containers, choosing glass or cardboard-packaged goods where available, and reducing unnecessary plastic contact all contribute to reduction across multiple vectors simultaneously.

Keeping It in Perspective

This isn’t meant to make you anxious. Anxiety about environmental exposures has real health costs too, and there’s a meaningful difference between informed action and fearful obsession. The goal here is clarity and practical reduction — not perfection.

You will still be exposed to microplastics. We all will, because they’re now embedded in our environment at every scale. But the exposure landscape is not flat — some things contribute far more than others, and those are the things worth addressing thoughtfully. A filter for your water. Glass containers for hot food. Better ventilation. These are achievable, durable changes that compound over time.

Living more cleanly isn’t about purity. It’s about making choices that align with how you want to care for your body — within the real constraints of your real life. That’s what organic, intentional living has always been about.