For those of you interested in genetic factors, here is a story about a Canadian family helping researchers discover why they have a high incidence of PD. http://www.ottawacitizen.com/city/000401/3857800.html Best, Kathrynne -- Kathrynne Holden, MS, RD Author: "Eat well, stay well with Parkinson's disease" "Constipation and Parkinson's" -- audiocassette & guidebook "Guidelines for Medical Nutrition Therapy for Parkinson's disease" & Risk Assessment Tools "Risk for malnutrition and bone fracture in Parkinson's disease," J Nutr Elderly. V18:3;1999. http://www.nutritionucanlivewith.com/