Wow just look at that. I got such a shock when I opened this in the news today. The full article can be found here. According to this news report, scientists have discovered what many have known all along--that crystal meth causes you to age and look older than you really are. So apparently what happens is changes the way your cells metabolise, causing it to speed ageing. This then triggers a rise in a type of molecule which promotes cell death. And then there will also be the formation of ceramides which areinflammatory molecules that cause cells to age and die. Lots of sciency stuff in that article that I won't repeat here. Go check it out if you're into that. But that picture alone is worth a thousand words.