You can test for the genes involved in PD. I think they've found 5 that are involved. It's also possible that both your parents got it because they were both exposed to the same toxins if they lived in an agricultural area or drank bad water.
The best thing you can do now is stay active and live your life as fully as possible. None of us knows what the future will hold. So enjoy the good days while you have them. Worrying about a future that may not happen can spoil the joy you could be feeling now.
Thank you for the information and a reminder to live life to the full. Best wishes to you.
Thank you - I'll get a kit
Check your vitamin d levei, very important