Check out how Alan Alda's public announcement helps raise awareness of PD.
Parkinson's disease: Risk factors and slowing its progression Actor Alan Alda's public acknowledgment that he has Parkinson's disease is raising awareness about the debilitating condition. Alda made the announcement Tuesday on "CBS This Morning." Parkinson's disease affects an estimated one million Americans and more than six million people worldwide. Dr. Rach... ... See MoreSee Less