**(What's WRONG with this picture??)**
I think its just that he looks very thin and older than his years.
I'm not saying that Chertoff is a health freak, but he has the telltale signs of one who goes to the extreme and ends up losing his health.
I hope that's not the case with him. He's younger than I am, and he looks 20 years older.
He looks like he's been starved.