Does Beer have microplastics?
The short answer
Synthetic particles were found in all twelve beer brands tested in a 2018 study — but almost all of it was fibres, which the authors themselves flagged as potentially airborne contamination during sampling. Treat this as weak evidence of a real thing, not strong evidence.
Why Beer scores 34
Brewing water carries whatever the municipal supply carries, and tap water tested positive in 81% of samples in the same study
Long polymer tubing in brewery and draft-line plumbing is a plausible route nobody has isolated
Glass bottles and cans both perform well as containers — the container is not the issue here
Plastic-bottled beer, common at events and festivals, is a different and worse product
Where the 34 comes from
Five components, added. The page renders the parts rather than a stored total, so the number cannot disagree with the reasoning behind it.
- Packaging contact
- 8 / 30
- Use conditions
- 4 / 25
- Measured release
- 14 / 25
- Polymer behaviour
- 4 / 10
- Processing
- 4 / 10
What material touches the contents, over how much surface area, for how long. Glass and steel score near zero here; a film pressed against fatty food scores near the top.
Heat, abrasion, flexing, repeated opening, reuse beyond design life. The same bottle scores differently in a fridge and in a hot car.
What a laboratory actually counted, for this product or its category. A high number here means real particles were measured, not that the material looks suspicious.
How this specific polymer behaves — brittleness, fat solubility of its additives, thermal stability, whether it is a polymer named in existing restrictions.
What happened before you bought it. Retort sterilisation inside the pack, hot-filling, and pressurised brewing all happen at the most migration-favourable moment.
What we don't know
Fibre-dominated results are the weakest kind in this field, because a single synthetic fibre from a lab coat lands in an open beaker and counts. The authors said so. What the study establishes well is ubiquity; what it does not establish is a dose from beer specifically.
This section is on every page in the database, including the ones where the answer is comfortable. How evidence grades work →
Better options
Ordered by how much they change, not by how much they cost.
Bottled or canned rather than plastic-bottled
the container decision you can actually make
This is not the category to optimise
the measurement is too weak to act on
Check the one in your kitchen
This page scores Beer as a product. Formulations, packaging and suppliers change, and the specific item you own has its own condition — a scratched pan and a new one are not the same object. Scan yours for a score built from what is actually in front of you.
Scan my packaged foodSources behind this score
Each with the finding we use it for and the limitation that finding carries — because a study quoted without its boundaries is how this subject got so noisy.
- peer-reviewed2018
Kosuth 2018 — Detected synthetic particles in 81% of tap water samples worldwide, in all 12 brands of beer tested, and in all 12 brands of sea salt.
Limitation: Overwhelmingly fibres, which are as likely to come from airborne contamination during sampling as from the product — the authors say so. It establishes ubiquity rather than any particular source.
- peer-reviewed2018
Schymanski 2018 — Compared formats head to head: single-use PET averaged 14 particles/L, returnable PET 118/L, glass bottles 50/L and beverage cartons 11/L.
Limitation: The glass result is the one people skip. Glass was not zero — particles came from the cap and the filling line, not the bottle wall. Small sample per format.
- agency2019
WHO 2019 — Concluded that microplastics in drinking water do not appear to pose a health risk at current levels, while calling the underlying evidence limited and urging more research.
Limitation: Predates the nanoplastic detection methods that changed the particle counts by three orders of magnitude. Its conclusion is about what was measurable in 2019.