What Are Microplastics and Nano plastics?
According to a 2021 Harvard study, microplastics are typically defined as solid synthetic polymer particles between 100 nanometers and 5 millimeters in size. Nano plastics are even smaller—less than 100 nanometers, or thousands of times smaller than the width of a human hair. Their microscopic size makes them invisible, tasteless, and scentless—but no less harmful.
Where Do They Come From?
• Primary sources include direct manufacturing use (like microbeads in cosmetics).
• Secondary sources result from the breakdown of plastic—from sun, heat, or wear—such as synthetic clothing fibers, car tires, and food containers or industrial processes.
The reality? Plastic doesn’t truly disappear—it simply breaks down into smaller and smaller pieces, spreading into our environment…and our bodies.
Why Should We Be Concerned?
Studies increasingly link microplastic exposure to a range of chronic health issues—including:
• Respiratory problems
• Obesity
• Cardiovascular disease
• Cancer
• Cognitive conditions like dementia
These particles are small enough to enter the bloodstream and, in some cases, cross barriers that typically protect vital organs. Right now, there’s no known way to remove them once they’re in the body.
Where Can You Make a Difference? Start in the Kitchen.
Let’s face it: plastic is everywhere. Just take a walk through your grocery store—how many items aren’t packaged in plastic? Even canned goods can be lined with BPA (bisphenol A), unless marked “BPA-free.”
But don’t get overwhelmed—small changes can make a big difference. Here’s where to start:
Smart Swaps to Reduce Plastic Exposure
Food Storage:
• Avoid heating food in plastic containers or bags. Use glass or food-grade silicone (like Stasher bags).
• Store hot food in glass or BPA-free containers.
• If you must use plastic, don’t reuse bags or wraps, especially after heat exposure.
• Try wax paper for non-liquid items or wrap before bagging to reduce direct contact.
Grocery Shopping:
• Buy unpackaged produce and meats whenever possible.
• Use cloth produce bags instead of plastic.
• Choose BPA-free cans for canned goods.
Water Bottles:
• Swap single-use plastic for glass or stainless-steel bottles, especially if you leave them in a hot car.
• Carry a bag and gloves on walks—picking up plastic bottles from roadsides helps protect groundwater and wildlife.
Final Thoughts
Yes, the plastic problem is huge—but don’t let that paralyze you. Just start small. Choose one area—maybe your water bottle or your food containers—and make a change.
As we each take responsibility for our choices, we create real, positive impact—for ourselves, our families, and the environment.
Learn More
• Harvard study – 2021 Plastic-Free Fresh Water
• Environmental Working Group
• UCLA Study: Chewing Gum & Microplastics
• Science Direct: Microplastic Pollution
• NPR: Chemicals Leaching from Food Packaging
• NRDC fact sheet: