A South Korean government study says paper straws carry a carcinogenic impact over six times higher than plastic ones, and the White House is using it to back President Trump’s long-running campaign against the paper straw.
Story Snapshot
- South Korea’s Ministry of Climate, Environment and Energy commissioned a life-cycle study comparing straw materials across 16 environmental and health categories.
- The study found paper straws had a modeled human-carcinogenic impact 6.33 times higher than conventional plastic straws, and 2.04 times the acidification impact.
- Conventional plastic ranked lowest in 10 of the 16 categories measured, including climate change and particulate matter.
- The findings line up with President Trump’s 2025 push to end federal use of paper straws, though outside experts note other studies have reached different conclusions.
Korean Study Flips the Script on Paper Straws
South Korean lawmaker Kim Wi-sang disclosed the study’s results on October 21, 2026, pulling back the curtain on findings commissioned by the country’s climate ministry. The Comprehensive Study on Single-Use Straws tracked straws from raw material production all the way through disposal. It measured 16 separate categories of harm, including climate change, ozone depletion, acidification, human toxicity and fine particulate pollution.
The headline number getting attention is the 6.33 figure. That is how much higher the study’s model estimated paper straws’ human-carcinogenic impact to be, compared with conventional plastic straws. The same analysis found paper straws carried over twice the acidification impact of plastic. Researchers also tested biodegradable plastic and bio-based polyethylene straws alongside the two most common materials.
Plastic Wins Most Categories, But Not All of Them
Conventional plastic straws came out lowest in 10 of the 16 categories the study measured, according to multiple reports on the findings. That includes climate change, acidification, particulate matter and human toxicity. The disposal model behind these numbers assumed about 74 percent of straws get incinerated and the rest go to landfills, a split specific to how South Korea handles its waste.
That detail matters. The study’s conclusions are built on South Korean conditions, not American ones. The United States recycles, landfills and litters disposable products differently than South Korea does, so the exact ratios reported in Seoul may shift if someone reruns the same model using U.S. waste-management data. No such American-specific version of this study has been published yet.
White House Framing Meets a Messier Scientific Record
The Trump administration has pushed this fight before. A March 2025 Domestic Policy Council report titled “National Strategy to End the Use of Paper Straws” already cited conflicting lifecycle research, noting one 2020 study found plastic straws performed better on climate emissions while another found the opposite, largely because of how the plastic was manufactured in different countries.
That conflicting record has not gone away. A separate peer-reviewed comparison found paper straws had lower climate-change emissions than plastic in many scenarios, even as it flagged disposable straws’ broader habit of ending up as litter. Life-cycle studies depend heavily on where materials are made, how waste gets handled and which of dozens of possible impact categories researchers choose to highlight.
A South Korean government study found paper straws worse than plastic in 10 of 16 environmental categories. Years of soggy sipping for nothing. https://t.co/dpTzGISZKU
— Ryan Dandin (@jrdandin) October 28, 2026
None of that changes what the Korean ministry’s study actually found, and it does not erase the specific 6.33 and 2.04 figures now circulating in Washington. It does mean the paper-versus-plastic straw debate remains an argument about trade-offs across different measurements, not a single settled verdict. For millions of Americans who switched to paper straws because they were told it was the responsible choice, the new study is likely to reopen a question many thought was closed.
Sources:
facebook.com, straitstimes.com, koreaherald.com
