| | 1 cigarette vs. 1 pack a day
A few days ago, my friend, who's been studying lung cancer in school, told me that there's no difference if a person smokes 1 cig or 1 pack a day. It's all about the length of period someone smokes and both have the same harmful effects. So if there were 2 people who smokes, 1 who smoked 1 cig a day for 5 years and the other who somked 1 pack a day for 5 years, he says the body is damaged the same amount. This totally doesn't make sense to me and has been on my mind since he told me this.
Has anyone heard or read anything about this before?