Yes, I have been diagnosed by several MDs with PD 4 years ago. My symptoms are bi-lateral tremor, softer voice at times depending on dopamine levels. I still can smell after 4 years too. Forgot to mention also that I've learned much about the importance of exercise (GDNF and BDNF) as well, so I run and lift weights 4 to5 times a week. I learned that you've got to sweat though to get the most benefit. Exercise increased dopamine alot. I hope that helps.