They say we all have our vices, unfortunately mine is smoking. I know it's terrible for my health, astronomically expensive and just plain ridiculous. Yet for the moment it's a habit I can't seem to kick.
Time Magazine has an interesting article by Michael D. Lemonick on clinical studies that are trying to uncover the physiological causes of and possible cures for addition be it smoking, drugs, coffee, shopping or sexual compulsion.
My favourite; slightly more frivolous; quote from the mostly science focused article is:
Addiction is such a harmful behavior, in fact, that evolution should have long ago weeded it out of the population: if it's hard to drive safely under the influence, imagine trying to run from a saber-toothed tiger or catch a squirrel for lunch.To read the article click here.