Actually, quite a lot I think
on Toxicology, B
The line between casual smoking and something more persistent gets blurry fast
President Barack Obama's habit of sneaking a cigarette - by bumming them from staff - has replaced the first family's dog, Bo, now well ensconced in the White House, as the hottest topic for reporters keen to pry into the President's private life
For people who use drugs, hepatitis C can be passed by sharing straws or rolled paper, and also by sharing stems or pipes for smoking, or injection drug use equipment
After several failed attempts to avoid smoking for 24 hours, Goldberg announced on Monday (17Sep12) that she has now gone several days without nicotine - and she's already feeling the benefits, including an increased appetite