In the case of cancer, DNA methylation found on tumor suppressor genes can halt the production of important agents that suppress tumor growth, ultimately leading to cancer

low certainty27 , 28), and magnitudes of weight gain for both nicotine and non-nicotine e-cigarettes.28 One RCT provided data on adverse events at 12 months that was of very low certainty,39 and a cohort study reported no serious adverse events or differences in smoking-related diseases at 4 years with nicotine e-cigarettes compared with traditional tobacco smoking (certainty could not be evaluated).49 Conclusions from the Cochrane living systematic review on potential harms were similar.24 Resource use Many behavioural interventions are covered by provincial and territorial health care systems or otherwise provided at no charge (e.g., quit lines), and every province and territory has at least limited coverage or rebate programs for pharmacotherapy, including NRT, which is considered a natural health product.50 53 However, people may have to pay out of pocket for some behavioural services or pharmacotherapy

It probably will not be a regular favourite, but it certainly has a place on my list
Cut if Necessary : Chop any larger pieces to achieve a finer cut suitable for cigarettes
Cigarette butts are the largest single type of litter by count and their filters do not biodegrade