James: Is that guy over there smoking? Does he even know what that does to you?
John: It’s pretty rude to say something like that in public, you know. Besides, it can’t be that bad.
James: But it is that bad for you. After a while, it starts to reduce your lung functions, and also prevents the lungs from clearing out the poison that will damage your lungs afterwards. That kind of damage to the lungs can’t be fixed.
John: Really? It’s that bad for you?
James: That’s not the only thing. It also increases your heart rate and blood pressure, and can cause damage to your artery walls, possibly increasing the risk of atherosclerosis and heart attack. On the other hand, it disrupts the immune system, making infections more frequent, and causing disease symptoms to be more severe and longer lasting. It also tightens your muscles, reduces bone density, and disrupts reproductive functions as well, reducing fertility. After prolonged smoking, there is also the high risk of chronic lung disease, heart diseases, stroke, and cancer in various areas.
John: Wow. I didn’t know it was that serious. Thanks for the heads up.
James: No problem.
John: That was still pretty rude, though.
James: Yeah, I guess. Hey, want to go buy some drinks? My treat.
James: Smoking for too long also causes reduced blood circulation, which might give you gangrene in the limbs, which will require you to be amputated . . .
John: You know what? Stop. You’re making me lose my appetite.