What They Are

Microplastics are extremely small plastic particles—less than 5 millimeters across—that result from the breakdown of larger plastics or are manufactured intentionally (such as microbeads once used in cosmetics and personal care products).

Where They’re Found

• Tap and bottled water

• Seafood and table salt

• Household dust

• Synthetic fabrics like polyester and fleece

• Plastic packaging and even some tea bags made of nylon

Why They Matter

Microplastics can carry the same endocrine-disrupting chemicals found in larger plastics—such as BPA and phthalates. These particles can be inhaled, ingested, or absorbed through the skin. Research suggests they may cause oxidative stress, inflammation, and hormonal disruption, although studies are still ongoing.

How to Reduce Exposure

• Use a home water filter (carbon or reverse-osmosis).

• Drink from glass or stainless steel rather than bottled water.

• Choose natural fabrics (cotton, linen, wool) instead of synthetics.

• Use a microfiber-catching laundry bag or filter when washing synthetic clothing.

• Limit single-use plastics and avoid over-packaged foods.