Michael J. Fox on Making A Difference

Michael J. Fox appeared on the CBS News and said this about his Missouri ad:"The irony is that I was too medicated. I was dyskinesic," Fox told Couric. "Because the thing about … being symptomatic is that it's not comfortable. No one wants to be symptomatic; it's like being hit with a hammer."

"At this point now, if I didn't take medication I wouldn't be able to speak."

He said he appeared in the ad only to advance his cause, and that "disease is a non-partisan problem that requires a bipartisan solution."

"This is not about red states and blue states," added Fox, who has also lobbied Congress to lift President Bush's restrictions on funding for stem cell research. "This is not about Democrats and Republicans. This is about claiming our place as the scientific leader in scientific research and moving forward and helping our citizens. That’s all it is. It’s that simple."

Fox said that it is difficult for him to appear in ads and do interviews because of his illness and what it does to him, but he is glad he is given the opportunty. "Honestly, I mean, I really feel this: That you get in your life very few chances to make a difference. And I really feel privileged to do this that I get a chance to do this. But having said that, it's not pretty. It's not pretty when it gets bad..."