How to Buy Food with Less Microplastics
Microplastics — tiny plastic particles less than 5mm in size — have been found in drinking water, seafood, salt, honey, beer, and even fresh fruits and vegetables. Scientists are still studying the long-term health effects, but the evidence is mounting that these particles are entering our bodies at significant rates. The good news is that where and how you shop can meaningfully reduce your exposure. Here's what the research says and what you can actually do about it at the grocery store.
The FDA acknowledges microplastics have been found in many foods but states that current evidence does not demonstrate they pose a risk to human health at detected levels. Research is ongoing. This guide is about practical reduction, not elimination — complete avoidance isn't possible, but meaningful reduction is.
Which Foods Have the Most Microplastics?
Research consistently shows that highly processed foods contain more microplastics than minimally processed ones. The more times food is handled, packaged, and processed — the more exposure it has to plastic equipment, conveyor belts, and packaging.
| Food | Microplastic Level | Main Source of Contamination |
|---|---|---|
| Breaded/processed shrimp | Very High | Plastic packaging, processing equipment |
| Bottled water | Very High | Plastic bottle degradation (up to 240,000 particles/liter) |
| Fast food | Very High | Packaging, plastic containers, high fat content |
| Processed/packaged meats | High | Multiple processing steps, plastic wrapping |
| Plastic-packaged produce | High | Plastic wrap and bags shedding particles |
| Tea bags (plastic mesh) | High | Plastic tea bag material breaks down in hot water |
| Sea salt | Medium | Ocean contamination |
| Beer | Medium | Water source and processing |
| Honey | Medium | Environmental contamination, packaging |
| Tap water (filtered) | Medium-Low | Municipal water systems |
| Fresh whole fruits & vegetables | Low | Soil and water absorption (minimal) |
| Wild-caught Alaskan seafood | Low | Least processed, minimal packaging contact |
| Bulk dry goods (glass jar) | Very Low | Minimal packaging contact |
| Loose leaf tea | Very Low | No plastic bag involved |
Where to Shop for Lower Microplastic Exposure
No grocery store is completely free of microplastics, but some shopping environments and store types significantly reduce your exposure compared to others.
🏆 Farmers Markets — Best Option
Farmers markets offer the least plastic-packaged food of any shopping environment. Fresh produce sold loose, proteins wrapped in paper, eggs in cardboard cartons. You also know exactly where your food came from and how it was handled. If reducing microplastic exposure is a priority, shopping at a farmers market for your fresh produce and proteins is the single most impactful change you can make.
🏆 Co-ops and Bulk Stores — Excellent Choice
Food cooperatives and bulk stores like Whole Foods bulk sections, Natural Grocers, and dedicated bulk stores allow you to bring your own glass containers and fill them with grains, nuts, spices, oils, and dry goods — completely eliminating plastic packaging from those items. This is especially valuable for pantry staples you buy regularly.
✅ Thrive Market — Great for Pantry Staples
Thrive Market sells many pantry items in glass packaging and offers a curated selection of minimally processed organic foods. Their focus on clean ingredients extends to packaging choices. For shelf-stable items like olive oil, nut butters, and condiments, choosing glass-packaged versions from Thrive is an easy upgrade. They also ship in recyclable cardboard rather than plastic padding.
👍 Whole Foods — Good for Packaged Goods
Whole Foods has made more packaging reduction commitments than most mainstream grocers and carries a wider selection of glass-packaged alternatives. Their bulk section is one of the best in mainstream retail. Prices are higher but for targeted items like olive oil, honey, and condiments in glass, it's worth it for reduced plastic exposure.
👍 Aldi — Good for Fresh Produce
Aldi uses less packaging than most mainstream grocery stores and has committed to reducing plastic packaging. Their fresh produce section uses minimal wrapping compared to chains like Kroger or Safeway. Buy your loose fruits and vegetables here and you're already reducing exposure significantly compared to buying pre-packaged produce.
⚠️ Mainstream Supermarkets — Shop Carefully
Stores like Kroger, Safeway, and Publix aren't bad choices overall but tend to have more heavily plastic-packaged produce, more processed foods, and fewer glass alternatives on shelves. You can still shop here with low microplastic exposure — just focus on the swaps below and avoid pre-packaged processed items.
Simple Swaps That Make a Real Difference
You don't need to overhaul your entire shopping routine. These targeted swaps address the highest-exposure items first:
❌ Bottled water
Up to 240,000 plastic particles per liter
✅ Filtered tap water
Reverse osmosis filter removes most microplastics
❌ Plastic tea bags
Mesh bags shed millions of particles in hot water
✅ Loose leaf tea
Use a metal or ceramic strainer — zero plastic contact
❌ Plastic-wrapped produce
Packaging sheds particles onto food surface
✅ Loose fruits & vegetables
Use cloth or mesh reusable bags instead
❌ Condiments in plastic bottles
Plastic leaches especially into acidic foods
✅ Glass-jarred condiments
Same product, zero plastic contact with food
❌ Heating food in plastic containers
Heat dramatically increases plastic leaching
✅ Glass or ceramic containers
Transfer food before microwaving — simple habit change
❌ Breaded/processed seafood
Highest microplastic levels of any protein tested
✅ Wild-caught Alaskan seafood
Lowest microplastic levels of any seafood tested
Kitchen Habits That Reduce Exposure
Shopping choices are only part of the picture. What you do at home matters too:
Never microwave food in plastic containers
Heat dramatically increases plastic leaching — even containers labeled "microwave safe" (which only means they won't melt, not that they're safe). Always transfer food to glass or ceramic before heating.
Use wooden or glass cutting boards
Cutting on plastic cutting boards causes plastic particles to shed directly into your food. A wooden or bamboo cutting board eliminates this entirely.
Store food in glass, not plastic
Especially for fatty or acidic foods — fat and acid increase the rate at which plastic leaches into food. Olive oil, tomato sauce, and leftovers should be stored in glass whenever possible.
Don't boil rice or pasta in plastic bags
Boil-in-bag rice and similar products expose food to plastic in boiling water — one of the worst combinations for leaching. Use loose rice and a regular pot instead.
The Practical Bottom Line
You can't eliminate microplastics from your food entirely — they're too widespread in the environment. But you can meaningfully reduce your exposure with a handful of targeted changes.
Start here: Switch to filtered tap water, buy loose produce instead of plastic-wrapped, and stop microwaving food in plastic. These three changes alone address the highest-exposure situations most people encounter daily.
For shopping: Farmers markets and bulk stores offer the lowest plastic exposure. Thrive Market and Whole Foods are the best mainstream options for glass-packaged alternatives. Any store works if you focus on buying fresh, minimally processed foods and avoiding plastic packaging where possible.
Remember: The goal is meaningful reduction, not perfection. Small consistent changes add up to significantly less plastic in your diet over time.