Fortunately it's a big increase in relative risk and not absolute risk: By 2021, 279 of the Camp Lejeune veterans, or 0.33%, had developed Parkinson’s versus 1

Fortunately it's a big increase in relative risk and not absolute risk: By 2021, 279 of the Camp Lejeune veterans, or 0.33%, had developed Parkinson’s versus 151 of those at Camp Pendleton, or 0.21%. After adjusting for differences in age, sex, race, and ethnicity, the scientists found veterans from Camp Lejeune had a 70% higher rate of Parkinson’s disease than the Camp Pendleton group. I guess it can be encouraging news for some people. My mom died with Parkinson's and I've almost certainly had less exposure to TCE than she did. I'm aware that there isn't really a known genetic link, it's just nice to occasionally see evidence that it can be exposure related. The increase in prevalence mentioned in the article isn't good, but that can be due to better techniques for diagnosing it.