A comprehensive evaluation conducted by South Korea’s Ministry of Climate, Energy and Environment has challenged long-standing assumptions about disposable drinking implements, concluding that paper straws can carry a substantially heavier environmental and health footprint than traditional plastic versions.
The research evaluated four distinct varieties of drinking straws—conventional plastic, paper, biodegradable plastic, and bio-based polyethylene—across 16 separate environmental impact categories. Rather than demonstrating an ecological benefit, conventional plastic straws registered the smallest environmental impact in 10 of the 16 evaluated categories, which included climate change, human toxicity, particulate matter accumulation, and acidification.
In contrast, paper straws demonstrated more than six times the carcinogenic impact of standard plastic straws, according to the findings. The study also recorded that paper alternatives produced twice the acidification impact on the environment compared to conventional plastic.
Alternative materials fared similarly under the ministry’s evaluation framework. Biodegradable plastic straws registered 3.34 times the carcinogenic impact and nearly double the acidification impact of standard plastic. Meanwhile, bio-based polyethylene straws, which are manufactured from renewable resources such as sugarcane, produced 16 times the carcinogenic impact of conventional plastic and six times the acidification damage, a metric tracking shifts in ocean and soil pH levels.
The findings challenge the widespread belief that paper tubes represent a cleaner ecological choice, particularly regarding waste management and recycling infrastructure. Researchers noted that paper straws are frequently too small to be captured by sorting machinery at recycling facilities, resulting in virtually none of them actually being recycled.
Furthermore, the physical construction of paper straws—specifically their water-resistant coatings and industrial-grade glues—makes them difficult to break down naturally. These structural adhesives require additional energy during processing and can still introduce microplastics into recycled material streams.
South Korean lawmaker Kim Wi-sang criticized the practical application of substitute material policies following the release of the findings. The government must acknowledge the failure of its greenwashing policy, which fixated on ineffective substitute materials, Kim stated.
The study’s conclusions intersect with ongoing political debates regarding single-use plastics and government regulations. President Donald Trump questioned municipal bans on plastic straws as early as 2019, asserting that administrative priorities should focus on larger infrastructure challenges. Last year, President Trump signed an executive order ending the prior federal push for paper straw usage and directing government agencies to return to utilizing plastic straws.
