what happens if u smoke cigarettes Tobacco can be bad for your health even you are not the one smoking. Breathing in the can lead to many health problems. Vaping is also bad for you. E-cigarettes Understanding the Risks of Smoking

As the study did not involve primary data collection, randomization and blinding, data exclusions were not relevant to the present study, and, as such, no data were excluded and we performed no randomization or blinding

Significance of two-sided Wilcoxon rank sum tests adjusting for multiple comparisons is indicated with stars above the boxes on the left (between never and past smokers), in the middle (between never and current smokers) and on the right (between past and current smokers) (N.S, not significant

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but have also been used in other countries

Also, if people are taking other medications, nicotine could interact with them