
The main aim of this study was to investigate how snus‐like non‐tobacco‐based nicotine pouches affect the oral mucosa and the severity of pre‐existing lesions. Sixty regular users of Swedish smokeless tobacco were encouraged to substitute their snus with non‐tobacco‐based nicotine pouch products for 6 weeks. In a second part, exposure to regular snus on the production of 48 different cytokines in peripheral blood mononuclear cells was compared in vitro with that from exposure to non‐tobacco‐based nicotine products. Results showed significantly increased production of proinflammatory cytokines in cells exposed to regular snus compared to untreated or cells exposed to non‐tobacco‐based nicotine products. This may be related to the improved clinical appearance of the oral mucosa in the participants that used the non‐tobacco‐based nicotine test pouches.
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