In depth article focusing on people living in Baltimore: https://www.theatlantic.com/ma...-your-health/561740/
"Many facets of Kiarra’s youth—the fact that her parents weren’t together, her father’s incarceration, the guns on the corners—are what researchers consider “adverse childhood experiences,” stressful events early in life that can cause health problems in adulthood. An abnormally large proportion of the children in Baltimore—nearly a third—have two or more aces. People with four or more aces are seven times as likely to be alcoholics as people with no aces, and twice as likely to have heart disease. One study found that six or more aces can cut life expectancy by as much as 20 years. Kiarra had at least six."