No, he andhis wife had ababy (that'll put paid to your looks on its own; lack of sleep is not the best beauty treatment in the world) and, like all of us, he got older.
If you want info on Noah Wyle try a site called "Peaceful Rest", There's a forum on that which keeps pretty up to date, alternatively there is ERforums.com which has a very extensive up to date NW section in its cast and characters section.
NW is nearly 35 now and looks pretty good for that age. Remember he was only 23 when he started. That's a huge difference. He and his wife Tracy have two children. So as not to take up space for people who aren't that interested, you can read all about his many activities on the sites mentioned above.
For Noah Wyle fans who may have missed it, this week's "TV and Satalite Week" has him on the front cover and there's an article inside about next week's episode on E4. I won't say more , because it contains possible spoilers. Also some pics. Enjoy!