Menopause, perimenopause, childbirth and breast-feeding can all cause a woman's sex drive to shut down.

There's never been a blueprint, I just keep exploring doors as they open. But whenever people would ask me what's my favorite thing to do, it was sitting in for Larry King.

Men have to recognize that women are not all the same when it comes to what can get them aroused.

We don't let the past determine the future unless we allow it too.

We start with people who are motivated to get paid and be on TV, and we end up with people who have been transformed by the experience and go on to embrace sobriety. If they relapse, like most of my patients do, we continue to support and treat them. I'm thrilled that five out the eight [Celebrity Rehab cast members] showed up for after-care, and two more committed to coming back.

Menopause, perimenopause, childbirth and breast-feeding can all cause a woman's sex drive to shut down.

I'm not a Twitter fan. I do it because I feel responsible to the two million people that follow me, but Twitter to me is just another thing I have do. And it's mostly a place for people to attack and abuse you. I don't really get much out of it, personally. I get hundreds of demands to answer the kind of medical questions that require three years of treatment to assess, yet people are furious when I don't solve their problems in 140 characters. It's really stunning.