Paper Straws May Harm Environment More Than Plastic, Study Finds

New research from South Korea indicates that paper straws, often promoted as an environmentally friendly alternative to plastic, may actually have a more significant negative impact on the planet. The study, conducted by South Korea's Ministry of Climate, Energy and Environment, analyzed four types of straws—paper, plastic, biodegradable plastic, and sugarcane-based—across 16 environmental categories.

The findings revealed that traditional plastic straws had the lowest environmental footprint in 10 of the categories assessed, including human toxicity, particulate matter, and overall climate change impact. Conversely, paper straws were found to generate over six times more carcinogens than standard plastic straws and contributed double the impact on environmental acidification, a measure of changes in ocean and soil pH levels.

Straws made from renewable sources, such as sugarcane-based or biodegradable plastics, showed even greater environmental concerns. These types produced 16 times the carcinogenic impact of standard plastic straws and six times the acidification damage.

The study also questioned the recyclability of paper straws. Due to their small size, they often pass through sorting equipment at recycling facilities, meaning very few are actually recycled. Additionally, their water-resistant coatings and glues require more energy during processing and could potentially release microplastics into recycled materials.

In response to the study's findings, South Korean lawmaker Kim Wi-sang criticized what he termed 'greenwashing' policies that prioritized popular narratives over scientific evidence. A survey of 1,001 South Korean citizens indicated that 87.5% dislike paper straws.

The researchers suggest that reusable straws made from materials like stainless steel or silicone are a more sustainable alternative. Alternatively, forgoing straws altogether is also presented as an option.