Mark Harmon, best known for his role as Leroy Jethro Gibbs on NCIS, has long been private about his personal life. However, recent revelations confirm that he battled a health issue he tried to keep hidden. For years, fans noticed subtle changes in his appearance and energy on-screen, sparking concerns about his well-being. Now, insiders have confirmed that Harmon faced a serious health struggle while continuing to work on the hit show.

Despite his condition, Harmon remained dedicated to his craft, refusing to let his illness affect his performance. Those close to him say he was determined to maintain a sense of normalcy, pushing through difficult moments without letting fans see his struggles. His decision to step away from NCIS in 2021 was likely influenced by his health, though he never publicly admitted it at the time.

Now that the truth is coming out, fans have flooded social media with support and admiration for the actor. Many applaud his resilience and professionalism, recognizing how much he gave to the role of Gibbs over nearly two decades. While Harmon has stayed out of the spotlight since leaving the show, his legacy remains strong, and fans continue to hope for his health and happiness.