Ever wondered what a lung looks like. I am sure your butcher can oblige if you want to see one out of the flesh, so to speak. If that is too biological for you perhaps a bit of reality web might be more acceptable, click here.

If you are someone who counts smoking amongst your vices then your lung will look more like this. (Gross out alert, it is pretty disgusting)

It is enough to make cut down on the fags. Don't bother it won't do you the sligtest amount of good apart from saving you money of course. Recent research by Stephen Hecht of the University of Minnesota Cancer Center has shown that when smoker cuts back on the number of cigarettes they compensate by inhaling deeper and absorbing more carcinogens. Even those who cut down the ciggies and used patches still compensated by inhaling deeper and showed little drop in the harmful chemicals in their body.

The message is simple, you need to give up completely.

Read more in Nature.