Erin Moriarty, best known for playing Starlight in The Boys, has revealed she faced severe health complications while filming the show’s final season.
The 31-year-old said her condition worsened significantly during production, leaving her unable to fully participate in key parts of filming.
Diagnosis: Graves’ Disease
Moriarty suffers from Graves’ disease, an autoimmune condition that causes the thyroid to become overactive, leading to hyperthyroidism.
The condition can accelerate bodily functions and cause symptoms such as fatigue, muscle weakness, and neurological issues.
She has previously said the illness made her feel like she was “dying” before she received a proper diagnosis.
“I Started to Lose the Ability to Walk”
In a recent Instagram post, Moriarty described how her symptoms escalated during filming.
She said numbness in her feet led to frequent falls and, eventually, difficulty walking altogether.
At one point, she suffered a fall the night before filming a major scene, injuring her knee.
Impact on Filming The Boys
Moriarty said her health struggles left her “not as present” as she wanted to be while portraying her character Annie January, also known as Starlight.
She admitted this affected her performance during early episodes of the season, though she later regained some stability toward the end of filming.
Despite this, she described the experience as emotionally and physically difficult.
Choosing Not to Watch the Final Season
Even though she has been part of the series since its debut, Moriarty said she does not plan to watch the final season.
She explained that prioritizing her mental health is more important at this stage, even though she remains a fan of the show.
Support on Set
Moriarty said she was supported by the cast and crew throughout production, which helped her continue working during a challenging period.
However, she described parts of the experience as “really scary” due to the uncertainty surrounding her health.
A Reminder of Invisible Illnesses
Graves’ disease affects the immune system and can vary in severity, sometimes developing gradually before becoming more disruptive.
Moriarty’s experience highlights how autoimmune conditions can significantly impact daily life, even in high-profile careers.
