Nearly all Denver jail inmates in high-risk unit have brain trauma
http://www.denverpost.com/news/ci_27673196/nearly-all-denver-jail-inmates-high-risk-unit
They were punched in the head in fistfights or shot, knocked around as children, beaten by spouses or struck by cars.
Almost every inmate in the downtown Denver jail's high-risk unit has a traumatic brain injury, so many that what began as a one-time university service learning project has grown into a new therapy program spreading to jails along the Front Range.
Neurological researchers from the University of Denver expected to find an above-average prevalence of brain trauma at the Downtown Detention Center. But the results were high enough to shock them.
Nearly every inmate screened 96 percent had a traumatic brain injury. That's significantly higher than national statistics showing from 67 percent to 80 percent of inmates in jails and prisons have a traumatic brain injury, and far higher than the estimated 6 percent to 8.5 percent of the general population.
I sincerely doubt this is unique to Denver.