Health Experts Warn Against Storing Food in Plastic Bags in Refrigerators

According to a report published by Khaosod Online on August 18, 2026, food safety experts are advising against the common practice of placing food directly into the refrigerator while still inside the plastic bags provided by vendors. While many households use this method for convenience, experts warn that plastic bags not specifically manufactured for food contact may pose health risks.

Although low temperatures in a refrigerator effectively slow bacterial growth, they do not render low-quality plastic safe. Experts note that certain recycled or non-standard plastic bags may contain additives, dyes, or plasticizers that are not intended for long-term food storage. This is particularly concerning for foods with high fat or acidic content, which may absorb chemical compounds from the packaging more readily than dry items. Furthermore, the report clarifies that the thickness of a bag is not a reliable indicator of its safety or quality.

For residents and travelers in Thailand, this serves as a reminder to be mindful of food storage habits. It is recommended to transfer groceries into appropriate, food-safe containers rather than relying on market-provided bags. While the potential for chemical migration is highlighted, the specific long-term health impacts of this practice remain a subject of ongoing discussion among safety professionals.