48 Thus, the cancer risk indices (CRI) for each compound might be calculated by dividing daily exposure in g/day by the default breathing rate of 20 m3/day and multiplying by unit risk (g/m 3 ) 1 49
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In our study, the upregulated metabolites of 1-methylxanthine, 7-methylxanthine, and theobromine, as well as downregulated caffeine, in the HN versus LN groups, resulted in enriching caffeine metabolism, suggesting that caffeine metabolism exhibited marked changes in the LN group
Now, thanks to the more recent introductions of smoke-free options like e-cigarettes and nicotine pouches, we are in a totally different landscape when it comes to commercial nicotine products, Hartmann-Boyce said