is chewing tobacco bad for thyroid linked to higher stroke and cancer risk, study finds The effect of smoking on

Department of Health and Human Services, 2012

Each participant had a scorecard in his pocket

Cigarette smoke affects digestion through multiple mechanisms: Nicotine stimulates the parasympathetic nervous system Inhaled chemicals create an inflammatory response in the gut Carbon monoxide alters blood flow to digestive organs Smoke exposure changes gut microbiome composition Research shows smoking encourages development of certain bowel diseases while potentially deterring others

However, smoking cessation did not significantly alter microbial diversity, indicating that while smoking exacerbated asthma symptoms and microbiome dysbiosis, cessation might not immediately restore microbial balance in the lungs [93]

It could be a run or it could be a pass