Can One Cigarette Hurt You?

Smoking just one or two times can cause immediate symptoms, such as the coughing and raw throat that you experienced, as well as nausea, lightheadedness, dizziness and other unpleasant feelings. That's the instant effect of all those toxic chemicals coming out of a cigarette or cigar, which your body isn't used to.

Is a single cigarette bad for you?

Conclusions Smoking only about one cigarette per day carries a risk of developing coronary heart disease and stroke much greater than expected: around half that for people who smoke 20 per day. No safe level of smoking exists for cardiovascular disease.

Is it OK to have a cigarette once in awhile?

“Even when you smoke a little bit; over the weekend or once or twice a week, the study is showing that that is not safe and the sooner you try to quit, the better.” It's helpful to have research that can show the health risks of smoking just a few cigarettes a day, Dr. Choi says.