In researching Parkinson's last year, I came upon a website by a doctor who said if you want to learn about Parkinson's, you first must study the Left Ventricle of the Heart. I lost the site, but I will keep searching. I only mention this because my husband, Rich now has Parkinsons. However, in October '03 he had a heart attack in the Left Ventricle. I wish I could remeber if he had already lost the swing of his right arm or not before the heart attack. I know he was dragging his right leg. He thought it was because his back was always bothering him due to his constant prostate problems, and that's why he dragged his leg. I've heard before that if we have different diseases going on in our body, these are not separate, rather the result of one systemic disease.