The news comes months after the Marvel actor suffered a horrifying face-first fall into a boulder that sent the bloodied actor to the hospital.

Evangeline Lilly in Lost.
Evangeline Lilly starred on ABC’s Lost for six seasonsCredit: Alamy
 

Woman with a bruised face.
Lost star Evangeline Lilly posted photos in May after a bloody accidentCredit: Instagram
Lilly posted a video on her Instagram account to let fans know she received a “brain damage” diagnosis following the accident and suffered cognitive decline.

“It’s late on January 1. The first day of 2026. I’m entering into this new year, the year of the horse, with some bad news about my concussion,” Lilly told fans in the video.

Lilly said she wanted to address fan concerns after receiving a slew of messages in the months since her fall.

“The results came back from the scan, and almost every area in my brain is functioning at a decreased capacity,” she said after suffering the traumatic brain injury.

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She added: “I do have brain damage from the TBI and possibly other factors going on. My job now is to get to the bottom of that with my doctors.”

Lilly rose to fame as one of the lead stars of the groundbreaking TV show Lost. She played the character of Kate Austin in all of the show’s six seasons.

She went on to appear as the elf Tauriel in Peter Jackson’s Hobbit films and Hope Van Dyne and the Wasp in a slate of Marvel Cinematic Universe films beginning with Ant-Man in 2015.

In June 2024, Lilly announced her retirement from acting to focus on family and her humanitarian work.

Nearly a year later, in late May, LIlly shocked fans when she posted gruesome photos of her battered face with a slash of dried blood caked above her lips after being rushed to a hospital in Hawaii.