Erin Moriarty on ‘Mental-Health Crisis’ After Graves’ Disease Diagnosis

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The Boys star Erin Moriarty recently opened up about a mental health crisis following her Graves’ disease diagnosis in a deeply personal essay. The 31-year-old actress revealed the toll the disease took on her after symptoms began in 2023. She was eventually diagnosed with the condition in 2025, but the struggle continued afterward.

Erin Moriarty discusses dealing with ‘mental-health crisis’ due to Graves’ Disease diagnosis

Erin Moriarty, best known for portraying Starlight on Prime Video’s The Boys, wrote a deeply personal essay for Time in which she detailed her struggle with Graves’ disease.

“I found out the heartbreaking way that a medically confused woman is rarely considered credible,” the actress wrote. “Women are often taught to distrust the severity of our own pain. I did, too.”

“My memory was failing me. My body felt unfamiliar,” the actress explained. She added, “My emotional presence, something I had always protected and valued fiercely as an actor, became increasingly difficult to access.”

She began to struggle with fatigue, which she said “became incapacitating. I began sleeping through every alarm. On weekends, I would sleep 19 hours (or more) straight. The mood swings I had experienced years earlier intensified. My hands and feet became so weak and numb that walking began to feel dangerous. I developed heart palpitations and persistent urinary pain.”

Moriarty added that the most frightening symptom was “cognitive decline.” She continued, “My short-term memory deteriorated so severely that learning even simple lines became difficult, terrifying when you’re filming a television show. I was going through the physical hell of chronic illness on a public stage. Doing it in private is emotionally damaging enough, but to have my physical symptoms be speculated about, trivialized, and dismissed was devastating.”

Finally, in 2025, as filming on the final season was wrapping, she received an answer. Moriarty was diagnosed with Graves’ disease, an autoimmune disorder that affects the thyroid and can cause insomnia, hair loss, anxiety, a rapid heartbeat, diarrhea, shortness of breath, and weight loss (via Cleveland Clinic).

The actress said that was “the day my life began again. Not because it instantly fixed everything, but because it finally gave shape to the chaos. It gave language to suffering that had gone on for years. It gave me an answer.”

However, months after she began treatment, she was hospitalized following what she described as a “severe mental-health crisis.” She said she realized “how absent from myself I had been for the previous two years. I had been hormonally dysregulated, cognitively impaired, and psychologically untethered for so long that recovery didn’t bring me peace.”

She further wrote in the essay that she wanted to speak out because “illnesses that disproportionately affect women are still too often minimized, misunderstood, or exaggerated. Silence has consequences. Ignorance does, too. And so, remaining silent about this is no longer an option for me.”

“The body speaks long before it screams. Listen to yourself before your body is forced to scream loud enough for the world to hear it, too,” she concluded.

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