Microplastics in Honey: What Bees Are Bringing Back to the Hive
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Key Takeaways
- The earliest claims (Liebezeit 2013) were later challenged as overcounting; modern peer-reviewed work finds 10–660 particles/kg.
- Bees act as environmental samplers, picking up airborne plastic fibres during foraging and transporting them to the hive.
- Synthetic fibres dominate over fragments, consistent with atmospheric deposition rather than honey processing.
- Plastic squeeze bottles (especially the bear-shaped LDPE bottle) add their own particle load over months on the shelf.
- Glass-jar local raw honey from a small beekeeper is generally the cleanest common option.
How bees end up carrying microplastics
Honeybees are natural environmental samplers. As they forage, their hairy bodies pick up airborne particles, pollen, dust, and increasingly, microplastic fibres from the air column. Once back at the hive, the particles work their way into wax, honey, and brood. Studies have detected microplastic in every hive component sampled across Europe, China, and North America.
What studies have actually measured
The 2013 Liebezeit study that started the conversation was later challenged for methodology (some of the “fibres” may have been beeswax filaments). Subsequent better-controlled work has refined the picture:
- Diaz-Basantes et al. 2020 (Ecuador) found ~54 microplastic particles per kg of honey on average, dominated by fibres.
- Mühlschlegel et al. 2017 (Germany) reported median particle counts in the low hundreds per kg in supermarket samples.
- Edo et al. 2021 (Spain) found microplastics in 100% of tested honey samples, with synthetic fibres dominating.
Honey packaging compared
| Honey format | Relative exposure | Why |
|---|---|---|
| Local raw honey in glass jar (small beekeeper) | Lowest | Glass + less industrial processing + shorter supply chain |
| Commercial honey in glass jar | Low | Glass eliminates packaging contribution |
| Squeeze-bear LDPE bottle | Higher | LDPE in direct contact for months; squeezing accelerates wear |
| Honey sticks / pouches | Higher | Plastic-lined packaging with large surface-area ratio |
| Industrially ultrafiltered honey | Variable | Some particles removed by filtration, but plastic equipment adds others |
Is the honey-bear bottle dangerous?
The iconic plastic honey-bear bottle is typically made from low-density polyethylene (LDPE, #4). LDPE is one of the less-leaching food plastics by chemistry, but the bear shape is squeezed during normal use, accelerating physical particle release into the honey. The bottle also typically sits on the shelf for many months before purchase and continues sitting in your pantry for months after. Long-term contact + squeezing = real particle transfer.
Practical changes
- Buy honey in glass jars whenever possible. The additional cost is typically $1–$3 per jar.
- Find a local beekeeper. Farmers' markets and small apiaries are generally lower exposure than industrially processed honeys.
- Decant squeeze-bottle honey into a glass jar when you get home.
- Avoid honey sticks and pouches. The plastic-to-honey ratio is the worst of any common format.
- Skip the microwave for crystallised honey. Decrystallise gently in a glass jar set in warm (not hot) water.
See related: microplastics in food and best microplastic-free products.
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Scan groceries in the appFrequently Asked Questions
Does honey contain microplastics?
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Is raw honey better for microplastics than processed honey?
Where do microplastics in honey come from?
What is the cleanest honey to buy?
Sources
- Diaz-Basantes MF, Conesa JA, Fullana A (2020). Microplastics in honey, beer, milk and refreshments in Ecuador as emerging contaminants. Sustainability.
- Edo C, Fernández-Piñas F, Rosal R (2021). Microplastics identification and quantification in the composted Organic Fraction of Municipal Solid Waste. Science of the Total Environment.
- Mühlschlegel P, Hauk A, Walter U, Sieber R (2017). Lack of evidence for microplastic contamination in honey. Food Additives & Contaminants: Part A.
- Liebezeit G, Liebezeit E (2013). Non-pollen particulates in honey and sugar. Food Additives & Contaminants: Part A.
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