Actor Greg Grunberg, known for his roles in “Felicity” and “Heroes,” recently discussed his battle with alopecia, an autoimmune disease causing hair loss. In a YouTube video posted on May 7, 2025, Grunberg, 58, revealed his alopecia diagnosis and shared his journey with the condition. He emphasized the importance of open dialogue and self-acceptance, encouraging others to not be ashamed of their experiences. Grunberg expressed gratitude for the support received and highlighted his positive mindset despite the challenges he faces. He attributed his alopecia activation to past knee surgery and shared his proactive approach to managing the condition. Grunberg’s openness mirrors other celebrities, including Jada Pinkett Smith and Lili Reinhart, who have shared their alopecia journeys to raise awareness and promote acceptance.
Image Credit: Touchstone Television/Courtesy Everett Collection
Greg Grunberg in a scene from ‘Felicity’
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According to the Cleveland Clinic, around 7 million individuals in the United States are affected by alopecia, which manifests in various forms. Some individuals with this condition may experience localized hair loss on the scalp, while others may have complete hair loss across their entire body.
The Clinic highlights that the likelihood of developing alopecia increases if there is a family history of the condition or if family members have other autoimmune disorders such as lupus or thyroid disease.
Although there is no definitive cure for alopecia, there are medications available that can provide assistance, and in certain instances, the condition may go into remission, as per the clinic’s findings.
For more details, you can refer to the original article on People magazine.