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NFL News

Aldon Smith’s Family Will Have His Brain Examined for CTE After His Sudden Death

The San Francisco 49ers logo is painted on the field before the game against the Atlanta Falcons at Levi's Stadium. Aldon Smith
Oct 19, 2025; Santa Clara, California, USA; The San Francisco 49ers logo is painted on the field before the game against the Atlanta Falcons at Levi's Stadium. Mandatory Credit: Darren Yamashita-Imagn Images

The family of former NFL defensive lineman Aldon Smith is seeking answers following his unexpected death at age 36. According to ESPN, Smith’s relatives have decided to send his brain to medical experts in Boston to determine whether chronic traumatic encephalopathy (CTE) played a role in his passing. The decision comes as part of a broader investigation into the circumstances surrounding his death.

Family Launches Independent Investigation Into Aldon Smith’s Death

Smith’s family has hired attorneys to examine the events leading up to his death. In a public statement, attorneys Harry Daniels, Bakari Sellers, and Wayne Kendall said they intend to uncover the full truth. They explained that Smith’s brain will be analyzed for CTE and other trauma potentially caused by years of concussions and repeated head impacts.

The family also asked for privacy as they process their loss and await medical findings.

Why Smith’s Brain Is Being Tested

CTE is a degenerative brain disease linked to repeated head trauma. It can only be diagnosed after death and has been found in athletes from contact sports, military veterans, and others exposed to repetitive brain injuries. Symptoms in confirmed cases have included mood swings, impulsive behavior, memory issues, and depression.

Smith’s family noted that he suffered numerous concussions during his NFL career, raising questions about whether long‑term brain trauma may have contributed to his struggles or his sudden passing.

Smith’s NFL Career and Legacy

Aldon Smith played six seasons in the NFL with the San Francisco 49ers, Oakland Raiders, and Dallas Cowboys. At his peak, he was one of the league’s most dominant pass rushers, known for his explosiveness and ability to disrupt offenses. His career ended in 2023 after a series of injuries and off‑field challenges.

Despite the ups and downs, Smith’s talent left a lasting impression on teammates, coaches, and fans.

What Happens Next

Medical experts in Boston will examine Smith’s brain for signs of CTE and other neurological damage. The family’s legal team will continue investigating the circumstances surrounding his death. No official cause of death has been released.