The diagnosis was Stage 1 CTE, the lowest level. The disease can only be diagnosed postmortem, so it's relatively rare for researchers to identify it in someone so young. Evidence of CTE had previously been found in football players ages 17, 18, 20 and 21. The Hilinksi family said they were told that their son's brain resembled that of a 65-year-old person.
"It was a shock to get those results and to find out that he had it and to realize that the sport he loved may have contributed to that diagnosis," Kym said.
The SI story and documentary offer intimate portraits of a family's search for answers as it processes unfathomable grief. The Hilinskis made clear that they don't blame football, and in fact, Hilinski's younger brother still plays the game. Ryan Hilinski will be a high school senior next season and has committed to play quarterback for South Carolina in 2019.
"I love this sport," Ryan told SI. "This is not what hurt him. I'm going to do everything that Tyler wanted to do with football."
The family knows it will have a complicated relationship with the sport. On one hand, they intend to be supportive of Ryan. On the other, they know the physical game likely contributed to their eldest son's suicide.
"How in the world am I going to get through next year and then four more years and not worry every single time my son gets hit or taken down?" Kym said. "Ryan doesn't need to see me cry or worry or be sick to my stomach. So I have to do what most moms do and just hide what I feel."
According to Sports Illustrated and NBC, the family chose to go public to help raise awareness for mental health and wellness. They've created a nonprofit called the Hilinski's Hope Foundation.
"What we're trying to do for student-athletes is we're trying to fund programs that support them and their mental health. They need it, there's not enough out there for these beautiful athletes that give of themselves to their colleges, but their minds aren't taken care of," Kym told NBC.
Where to get help:
If you are worried about your or someone else's mental health, the best place to get help is your GP or local mental health provider.
However, if you or someone else is in danger or endangering others, call police immediately on 111.
Or if you need to talk to someone else:
• LIFELINE: 0800 543 354 (available 24/7)
• SUICIDE CRISIS HELPLINE: 0508 828 865 (0508 TAUTOKO) (available 24/7)
• YOUTHLINE: 0800 376 633
• NEED TO TALK? Free call or text 1737 (available 24/7)
• KIDSLINE: 0800 543 754 (available 24/7)
• WHATSUP: 0800 942 8787 (1pm to 11pm)
• DEPRESSION HELPLINE: 0800 111 757