My father had dementia and looking back what now seems to me like Parkinson's but not diagnosed. I have reddish hair and have PD. But if I were you I would not fret. Do all the things to be healthy ANYWAY. I think of the times I almost rear ended or been rear ended which could have caused serious harm, or the bout with pneumonia that made me very ill and sent me to the hospital for a week. There are so many things that can happen in life, best to move on and live it. Hope this doesnt sound preachy. Just my 2 cents