What Happened to Tom Bosley?

I ask this not to make fun of his age or his appearance but seriously, what happened to him?

The last time I saw him a few years ago, he was doing infomercials for some company. But evidentally, he must have aged 20 years since then because he's not looking so good. We here at Evening With Sabs hope all is right with Mr. Bosley.

Compare him to Rutger Hauer and Tom seems healthy.