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# E-cigarette byproduct harms lung cells, UCR study finds
- URL: https://www.raincrossgazette.com/noteworthy/e-cigarette-byproduct-harms-lung-cells-ucr-study-finds/
- Published: 2025-10-29T19:00:00.000Z
- Updated: 2026-10-22T13:47:36.000Z
- Author: Gazette Staff
- Tags: Education, #brief, #herald-noteworthy:690109e4dc05f40001e7a0e9:0

UC Riverside researchers discovered that [methylglyoxal proves more toxic than acetaldehyde](https://news.ucr.edu/articles/2025/10/23/hidden-toxins-e-cigarette-fluids-may-harm-lung-cells?ref=raincrossgazette.com) to human lung cells when propylene glycol in e-cigarette fluids is heated, with lower-powered devices potentially producing higher toxin levels.