Actor Greg Grunberg, known for his roles in “Felicity,” “Heroes,” and “Alias,” is speaking out about his recent hair loss after being diagnosed with alopecia, an autoimmune disorder that causes the body to attack its own hair follicles.
In a YouTube video posted on May 7 to his “Talk About It” channel, Grunberg addressed public concern over his altered appearance after photos circulated of him without his usual hair.
