Under the bright lights of Monday Night Football in 1990, one collision captured the brutality of football. Charging forward was running back Christian Okoye, the feared ‘Nigerian Nightmare,’ when defensive back Steve Atwater stepped in. Around 50 pounds lighter and unafraid of consequences, he met Okoye head-on and stopped him cold, a thunderous hit that instantly became one of the NFL’s most unforgettable tackles.

Moments like that once defined the league’s toughest era, but they also helped spark deeper conversations about player safety. As concerns over repeated head injuries grew in the early 1990s, then-commissioner Paul Tagliabue created the Mild Traumatic Brain Injury Committee, marking one of the NFL’s first steps toward addressing the long-term impact of the game’s hardest hits. However, some hits still leave a deeper impact on players. Okoye, for instance, didn’t just have to retire early but still continues to suffer the aftereffects of his physicality filled career.

“I’m being tested for Alzheimer’s disease. I don’t know if I have it. All this forgetfulness that I have, it’s there,” Okoye said on the 4th and Favre podcast this week. The players that I know and friends that I played with and against, we all fear that that day never comes. It’s gotten a little worse. I see a doctor in Orange County, California, and I get tested, and he tells me so. He gave me some medications and asked me to do some things to help out. So I’m just very active. And if it’s going to delay it some, or at least not have it as bad, it’s just one of those things that you have to keep working at.

Truth be told, Okoye’s concerns are not unreasonable. For the 2X Pro Bowler and most retired players, it is nothing more than a ticking time bomb. Take a look at this study from 2014, for example. As per NFL player data released that year, nearly 30% of former NFL players were estimated to develop Alzheimer’s disease or dementia, a percentage significantly higher than the general population. To break it down more, 14% of all former players were reportedly in risk of developing Alzheimer’s, while 14% were in risk of dementia.

The data also suggested that NFL players have “about twice the risk as the general population from early-onset Alzheimer’s, ALS, Parkinson’s or dementia”. Even a decade of NFL rules and medical advancements later, that number hasn’t changed much.

As per another research study done in 2024, nearly one-third or 680 of 1,980 retired NFL players thought they had chronic traumatic encephalopathy (CTE), a degenerative brain disease found in people with a history of repetitive brain trauma. Additionally, over 230 said they experienced suicidal thoughts and 176 mentioned they were diagnosed with Alzheimer’s disease.

“A key takeaway from this study is that many conditions common to former NFL players such as sleep apnea, low testosterone, high blood pressure and chronic pain can cause problems with thinking, memory and concentration,” a senior research scientist at Harvard Chan School said.

Now add this to Okoye’s injury history, and it’s clear enough to understand why he’s concerned.

During his prime years with the Chiefs, the retired player ran through defenders with unmatched power. However, injuries soon began to take their toll. One of the first setbacks arrived in 1988 when a thumb injury kept resurfacing throughout the season. Because of it, he missed seven games and finished the year with fewer than 500 rushing yards. Even though he later bounced back, the injury marked the beginning of a difficult stretch physically. Soon after that, knee trouble became the biggest obstacle.

The issue began bothering him during the 1990 season and never fully went away. Even though he still managed a 1,000-yard campaign in 1991, the constant pain pushed him into a limited goal-line role by 1992. The situation became so severe that he underwent arthroscopic procedures on both knees before the 1993 season, which ultimately led to his release from the Chiefs with an injury settlement. During his Chiefs tenure, he also dealt with a herniated disk in his back that required minor surgery during the summer of 1994 as he attempted to return to football.

On top of that, the constant hits absorbed by his neck and shoulders during his career made everyday movement more difficult than it once had been. By the final year of his career in 1992, the effects of those injuries were becoming impossible to ignore. Okoye started only five games that season, and the Chiefs often limited how much he played in order to protect what remained of his health.

“If I had played one more year, I don’t know if I’d still be walking today,” Okoye had later remarked. “When you play like we do, it’s like having thousands of accidents on the field. When you have injuries to your knees, that’s not a good sign. Even if it’s not that serious, it can get serious. When you’re a big guy, the defenses go for your knees. I tried to protect them as much as I could.”

But there’s still one regret that remains.

“If I was playing today, I could have played it a little longer than I did,” Okoye said on the 4th and Favre podcast. “When I was playing, it was a gladiator sport. I hated the fact that we hit each other all the time. As you get older, you start feeling all the bump bumps and bruises. When I say that I wish I never played football, I would say it’s because of what I’ve seen it do to people. Like Brett Favre and many other people who are suffering because they played the game. I was afraid that will be me in the near future.”

Christian Okoye was still hopeful of making a comeback after being released

Back then, shoplifting was a constant worry for store owners across the country. But that wasn’t really the case for Christian Okoye. He opened his sports apparel shop in Azusa, near the San Gabriel Mountains, and had a built-in form of security. The former Chiefs star stood 6-foot-1 and weighed around 260 pounds, and he liked to joke that the photo of him at the front of the store was enough to scare off anyone with bad intentions.

Okoye had already carved out a powerful career before injuries slowed things down. After surgeries on both knees and his back, he stepped away from the field but never lost the drive to return. During that stretch, he spent mornings training at Azusa Pacific University and afternoons running the shop, surrounded by jerseys, photos, and reminders of his playing days. His story had always been unique.

Born in Enugu, Nigeria, he didn’t even see a football until arriving in Azusa in 1982 on a track scholarship. Coaches once had to place a big arrow on the field just to show him which direction to run. Yet he learned quickly, piling up thousands of rushing yards in college before the Chiefs drafted him in 1987. What followed was a bruising run through the NFL that produced nearly 5,000 rushing yards and a reputation as one of the league’s most feared runners.

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Even while running his store and waiting for another opportunity, Okoye made it clear he still missed the game and hoped the phone might ring again. But it never did. Nevertheless, Christian Okoye still carries real credibility among the Chiefdom.

The former running back played for the Kansas City Chiefs from 1987 through 1992 and built a reputation as one of the league’s most punishing runners. Over those seasons, he collected two Pro Bowl selections and reached first-team All-Pro status in 1989 and second-team All-Pro in 1991, while also establishing himself as a key piece of the Chiefs’ offense.