Microplastics & Your Health: Reduce Exposure Now

Every week, without even knowing it, you may be swallowing or breathing in enough plastic to equal the size of a credit card. These tiny particles – called microplastics – are not just passing through. They’re building up in our organs, tissues, and even our brains. In fact, in 2024, researchers found that human brain samples contained about 0.5% plastic by weight.

The reality is hard to ignore: plastic pollution is no longer just about the ocean or the environment – it’s happening inside our bodies. Let’s break down what microplastics are, how they get in, what they’re doing to our health, and what you can do to protect yourself.

What Exactly Are Microplastics?

Microplastics are simply tiny bits of plastic. Some are so small you can see them, others are microscopic.

Microplastics = pieces smaller than 5 millimeters (about a grain of rice).
Nanoplastics = even tinier – thousands of times smaller than a grain of sand.

Where they come from:

The breakdown of bigger plastic items (bags, bottles, packaging).
Synthetic clothing fibers (polyester, nylon, acrylic).
Household items (non-stick pans, food containers).
Everyday products (cosmetics, cleaning products).

How Do They Get Into Our Bodies?

Two main ways: eating/drinking and breathing.

Eating & Drinking

Water: Tap water already contains microplastics, but bottled water can be even worse—nearly a million extra particles per year for heavy bottled water drinkers.
Food: Microplastics have been found in seafood, fruits, and vegetables (from polluted soil, water, and even airborne dust).
Packaging: Plastic cups, baby bottles, take-out containers, and cans lined with plastic coatings can shed plastics directly into our meals.

Breathing

Air in cities often carries plastic fibers from clothing, tires, and shoes.
Indoor dust is also full of fibers from carpets, couches, and laundry.
These particles are small enough to be inhaled deep into the lungs.

Where Do They Go?

Once microplastics get inside us, they don’t just leave. They’ve been found in:

Lungs: Causing irritation and possibly contributing to asthma or other breathing issues.
Liver: Our detox organ, which shows signs of stress and damage when exposed.
Brain: Early evidence shows particles can cross the blood-brain barrier, possibly leading to inflammation and memory or mood problems.
Reproductive system: Found in placentas and sperm samples; linked to fertility issues.
Arteries: Plastic lodged in arterial walls has been tied to higher risks of heart attacks and strokes.

The Chemicals Hitching a Ride

Microplastics are concerning enough, but many also carry harmful chemicals.

BPA & BPS: Can mimic estrogen, disrupting hormones and raising risks for fertility problems, weight gain, and even certain cancers.
Phthalates: Used to make plastics flexible, linked to lower testosterone, menstrual irregularities, and developmental issues in kids.
PFAS (Forever Chemicals): Used in non-stick pans, takeout wrappers, and water-resistant fabrics. They build up in the body and may raise risks of thyroid problems, immune issues, and cancer.

Heat makes it worse.
Microwaving food in plastic containers, drinking hot coffee from a paper cup lined with plastic, or leaving bottled water in a hot car all accelerate chemical leaching.

Health Risks Linked to Microplastics

Hormone disruption: Causing irregular cycles, early puberty, reduced sperm quality, and fertility struggles.
Brain health: May increase inflammation, tied to Alzheimer’s, Parkinson’s, ADHD, and even autism spectrum risks.
Heart problems: Linked to high blood pressure, disrupted heart rhythms, and clogged arteries.
Cancer: Early research shows links to breast cancer, bone cancers, and lymphoma in high-exposure groups.

Everyday Sources to Watch Out For

Bottled water & canned foods: Plastics leach directly.
Sea salt: Often highly contaminated. Rock salts (like Himalayan pink salt) are safer.
Takeout & coffee cups: Heat + plastic linings = high leaching.
Synthetic clothing: Polyester, nylon, and acrylic shed fibers we breathe and wash down drains.
Household dust: Especially from carpets and upholstery.
Receipts: Many are coated with BPA that can absorb through skin.

What You Can Do

You can’t avoid plastics entirely – but you can lower your exposure.

Water & Beverages

Use a reverse osmosis filter at home.
Store water in glass or stainless steel.
Avoid hot drinks in plastic-lined cups; carry a reusable mug.

Food & Cooking

Store leftovers in glass or ceramic containers.
Don’t microwave plastic.
Limit canned food and drinks.
Use cast iron, stainless, or ceramic pans instead of non-stick.

Air & Fabrics

Run a HEPA filter indoors and vacuum with one too.
Choose natural fibers (cotton, wool, linen) when possible.
Avoid synthetics like polyester and nylon. If you do have clothing with these materials, avoid washing in hot water and hang them to dry to avoid breakdown and release of microplastics.

Extra Habits

Wash produce with filtered water.
Opt for digital receipts.
Add detox support: eat fiber-rich foods and cruciferous veggies (like broccoli sprouts), exercise, and sweat regularly to help the body clear toxins. Check out this post to add detox-boosting habits to your health routine.

The Bottom Line

Microplastics aren’t just an environmental issue – they’re a health issue. They can accumulate in our bodies, disrupt hormones, damage organs, and increase risks for chronic disease.

The good news? Small changes matter. Switching to glass storage, filtering water, choosing natural fibers, and eating detox-supportive foods can all reduce your exposure.

When more of us make these everyday choices, it doesn’t just protect our health – it helps reduce the overall plastic problem for future generations too.

Looking for additional ways to eliminate toxins from your life? Check out my complete shopping list of non-toxic beauty product swaps here!