I'm new to this world of PD, as of June officially, but it's something I have thought about a lot as well. Why is there a worldwide increase in cases?

I kind of buy into the fact that people are being diagnosed earlier than ever before, which inflates the statistics, but also can't shake the feeling that something environmental - or some things environmental - is having a disproportionately big impact. The western lifestyle cocktail of inadequate nutrition and high stress does seem like a truly debilitating combination.