Concussion which caused unconsciousness increased risk of Parkinson's by 50 percent (300,000 military)
Even a Mild Head Injury Increases Your Risk for Parkinson's Disease Mercola
" Here, “concussion” was defined as loss of consciousness for up to 30 minutes or alteration of consciousness and/or amnesia for up to 24 hours"
"Medical records of nearly 326,000 U.S. military veterans ranging in age from 31 to 65 were evaluated in this retrospective cohort study, showing that a TBI resulting in loss of consciousness raised the risk of Parkinson’s by 56 percent."
"Those with one or more TBIs in their past also received a diagnosis of Parkinson’s on average two years earlier compared to those who had never had a TBI."
Includes information on Omega-3 and CBD and an interview of the author of the scientific study
See also VitaminDWiki
Dementia risk increased 2.4 X following TBI, even if had not lost consciousness – May 2018
5 Traumatic brain injuries resulted in 2.8 X increased risk of dementia – April 2018
Having several concussions as a teenager doubled the risk of Multiple Sclerosis – Sept 2017
High school sports did extremely well and eliminated injuries and concussions with Vitamin D Matthews