Summary

A University of California, Riverside-led study has found that heavily used high-puff electronic cigarettes may contain higher levels of harmful chemicals than fresh e-cigarettes, raising concerns about potential health risks for users. E-cigarettes, also called ECs or vapes, are sold with an advertised puff count—roughly how many inhalations the device is designed to deliver before it is depleted. A high-puff EC is one rated for many puffs, typically in the thousands.

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