# Plastic Cutting Boards Shed up to 50 Grams of Microplastics Into Food Each Year > A 2026 synthesis of 98 studies found that routine knife use on polypropylene and polyethylene cutting boards releases 7 to 50 grams of microplastic particles into food per person per year, making kitchen cutting boards one of the highest dietary exposure routes identified to date. - Type: explainer - Published: 2026-05-30 - Updated: 2026-08-05 - Author: Lucas Gruber - Canonical: https://nontoxicnook.com/articles/microplastics-plastic-cutting-boards Prices are deliberately omitted from this mirror — they go stale. Current prices, stock, and where to buy live on the product pages linked below. --- A peer-reviewed synthesis published in 2026 found that chopping food on a standard plastic cutting board sheds between 7 and 50 grams of microplastic particles into meals over the course of a year. The source material is polypropylene and polyethylene, the two plastics in the vast majority of cutting boards sold in the U.S. and Europe. The kitchen counter, not the factory or the landfill, is the center of this exposure. ## The source "Hidden danger in everyday cooking: microplastic release from plastic cutting boards and impact on health and the environment," Khorsandi et al., *Toxicology and Environmental Health Sciences* (Springer), 2026. The paper synthesizes findings from 98 prior studies. [Read the paper.](https://link.springer.com/article/10.1007/s13530-026-00312-z) * 7–50g per year (microplastics shed into food from a plastic cutting board) * 98 studies synthesized (in the Khorsandi analysis) * PP + PE the two plastics (in most cutting boards sold in the U.S. and Europe) ## What it actually means > Every meal prepared on a plastic cutting board is a direct exposure event. The 7–50 gram range reflects actual kitchen behavior: harder boards, older boards, sharper knives, and more frequent use all increase shedding. These are fragments and fibers shed directly from the board surface during cutting — not particles migrating slowly from packaging. Research on dose-response effects of dietary microplastics in humans is still developing; what this synthesis establishes is that the exposure is measurable, ongoing, and kitchen-sourced. ## In the home The cutting board is the single highest-volume contact point in most kitchens — used multiple times daily, with particles released directly into food during every session. A separate scoping review of 350 studies, reported by the Food Packaging Forum in April 2026, identified cutting boards as one of the top kitchen microplastic exposure routes. The exposure scales with use. Harder boards, older boards with established knife grooves, and more frequent prep sessions all increase particle shedding. Every type of knife work — chopping vegetables, slicing meat, breaking down herbs — removes material from the board surface and deposits it in the food. ## What to do The swap is low-cost and permanent. A wood or bamboo cutting board does not shed polymer particles under knife use — the knife scores the grain rather than removing microplastic fragments. If you're shopping right now, the [product directory](/products) is filtered against [the criteria](/our-promise) this study calls out. **Sources:** 1. [Hidden danger in everyday cooking: microplastic release from plastic cutting boards and impact on health and the environment — Khorsandi et al., Toxicology and Environmental Health Sciences, Springer, 2026](https://link.springer.com/article/10.1007/s13530-026-00312-z) 2. [Consumer plastics can release billions of microplastics, report finds — Food Packaging Forum, April 8, 2026](https://foodpackagingforum.org/news/consumer-plastics-can-release-billions-of-microplastics-report-finds) --- Nontoxic Nook is an independent guide: every listed product cleared the published criteria at https://nontoxicnook.com/our-promise. This mirror links only to our own pages; affiliate disclosure: https://nontoxicnook.com/affiliate-disclosure.