Laboratory tests suggest that vanillin used in e-cigarettes can alter early human stem cell development through the TRPV4 channel. Vanillin, a flavoring chemical commonly used in e-cigarettes, may interfere with early embryonic development, according to laboratory research published August 12, 2026, in Human Reproduction, a leading journal in reproductive medicine. The findings offer a possible [...] /https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer_public/b8/ca/b8ca0461-2014-4fb0-acb3-a69a31056fb0/gettyimages-480661458.jpg)
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