Key Highlights:
- Mark-Paul Gosselaar reflected on his Saved by the Bell years, maintaining that the behind-the-scenes claims in Dustin Diamond’s 2009 tell-all book were inaccurate.
- Gosselaar reaffirmed that there was never any real animosity between him and Diamond, noting the cast viewed Diamond like a younger brother before his passing in 2021.
- The actor has teamed up with AstraZeneca for the ‘Meet Your Mark’ cancer biomarker testing campaign while preparing for an upcoming workplace comedy series titled Bulges.
Reflecting on Bayside High and Dustin Diamond’s Memoir
Actor Mark-Paul Gosselaar has revisited his time portraying the charismatic Zack Morris on NBC’s hit sitcom Saved by the Bell, while directly addressing the controversial claims published years ago by his late co-star, Dustin Diamond. Between 1989 and 1993, Gosselaar spent his teenage years on screen alongside Diamond, Tiffani Thiessen, Mario Lopez, Elizabeth Berkley, and the late Patrick Muldoon. The lighthearted legacy of the show was later complicated in 2009 when Diamond, who starred as Samuel “Screech” Powers, published the tell-all book Behind the Bell, alleging widespread misconduct and claiming that Gosselaar had used steroids in 1994.
Gosselaar and his fellow co-stars strongly rejected the claims upon the book’s release. Diamond, who died at age 44 from lung cancer in 2021, later offered an apology to the cast, blaming a ghostwriter for exaggerating offhand comments. In an interview on Oprah: Where Are They Now? in 2013, Diamond clarified: “That came about from throwaway statements of [the ghostwriter asking], ‘Was anybody doing drugs or sleeping together on the set?’ [I said], ‘Well, what do you think – there was a bunch of kids with hormones’.”
When Diamond passed away, Gosselaar honored his colleague as a ‘true comedic genius’
and shared that he ‘will miss those raw, brilliant sparks that only [Diamond] was able to produce’
.
Dispelling Rumors of an On-Set Feud
Addressing past speculation regarding a personal rift between himself and Diamond, Gosselaar previously clarified at a ’90s Con’ gathering that the cast ‘never took it personally’
and viewed Diamond as a ‘little brother’
. Addressing an attendee who questioned if they had resolved their issues prior to Diamond’s death, Gosselaar stated: “Well, just to clear, there was nothing to reconcile because that beef that was created was created out there, not here,”
In a recent discussion with LADbible, Gosselaar was asked whether he had any insider stories from his time on the show to reveal. The 52-year-old actor explained why he prefers to keep those memories close to the chest, explaining: “No, they’ll quietly stay with us until somebody writes a book.
He continued: “I mean, Dustin wrote a book, but it wasn’t very accurate and was kind of one-sided…but [the experience will] stay with us, I think, and thank goodness for no social media back then.”
He emphasized: “Because none of it was documented or is available for anybody else to enjoy. It’ll be our quiet, little secrets that we endear.”
The shared experience of early television stardom continues to unite the former cast members. According to Gosselaar, the ensemble remains close as they navigate similar stages of adulthood: “We’re all very much still connected and reach out to each other whenever we can,”
noting that they are now ‘all parents who are going through the same thing in life at the moment’
. Despite his status as a 1990s teen icon, the father-of-four admitted that his children do not ‘care very much’
about his past fame and have only caught a few episodes here and there.
Reviving the ‘Time Out’ for Cancer Biomarker Testing
Gosselaar has returned to his iconic Saved by the Bell persona by bringing back his famous “time out” gesture to headline the ‘Meet Your Mark’ educational campaign, organized in partnership with pharmaceutical company AstraZeneca. The public health initiative aims to promote awareness around cancer biomarker testing. Biomarkers—which AstraZeneca describes as signs in the body ‘like genes, proteins, or other substances, that doctors can measure through blood or tissue tests’
—play a critical role in evaluating treatment options.
As AstraZeneca outlines: “Biomarker testing may tell a doctor about the specific type of cancer present, how aggressive it might be, whether a treatment is working, or if targeted therapies or immunotherapies might help. Even if two people have the same type of cancer, their tumours can behave differently. Biomarkers can decode these differences, helping people and their doctors choose the next step in their treatment plan.”
For Gosselaar, advocating for diagnostic awareness is deeply personal. A close family member was recently diagnosed with the disease, with his wife, advertising executive Catriona McGinn, taking active charge of navigating their healthcare. “I have someone very close to me who was recently diagnosed with cancer,”
Gosselaar said. “It’s an ongoing issue. Having seen what they’re going through, it breaks your heart. And for people who feel like they have nowhere to turn…I feel that this is a great campaign to help people understand that there is something that could possibly help them feel like their treatment is more personalised towards their unique cancer.”
Gosselaar also addressed the personal toll the illness has taken over the years, noting: “There’s been a lot of people in my life that I’ve known that have passed away from cancer recently, in the past decade even. Each one is a tragedy. And just having more information, I think helps in the process.”
Lifestyle Choices and Upcoming Screen Projects
Beyond advocacy, Gosselaar emphasizes proactive wellness, noting that adequate sleep, proper diet, and exercise serve as his core priorities. “I’m not necessarily trying to live longer,”
he explained. “I’m just trying to live healthier and have a healthy lifestyle so that I’m around for my children and their children, so that I can live a life that’s not bothered by ailments. There’s obviously things that we just can’t prevent or foresee, but if there’s things that I can do, I’m always looking to enhance those things so that I can become a better individual, whether it’s mentally or physically.”
He views the ‘Meet Your Mark’ effort as a practical guide for newly diagnosed patients facing uncertainty: “I feel like if I were, God forbid, going through a diagnosis, I would just want direction. Like, where do I start? This gives them a good opportunity to start with a question for their doctor. And it’s a direction to go in.”
On the acting front, Gosselaar is preparing for a sharp pivot in genre. He is slated to star in a new workplace comedy titled Bulges, which he equated to ‘a male version of Hooters’
. Describing the premise, he stated: “It takes place in a restaurant and it’s just a crazy, wacky bunch of guys and gals. I mean, it’s nuts. It’s a completely insane comedy that is a huge departure from anything I’ve done in the past. It’ll be insane. The title alone just makes you smile. You have to see a show called Bulges.”
Why This Matters
Personal health advocacy from prominent public figures continues to be a driving force in raising awareness around complex medical diagnostics. By using his recognizable pop-culture persona to spotlight biomarker testing alongside AstraZeneca, Mark-Paul Gosselaar helps demystify specialized oncology concepts, encouraging patients to pursue precision medicine and targeted treatments. Concurrently, his reflections on Dustin Diamond provide enduring clarity on the lasting personal dynamics, misconceptions, and brotherhood forged within one of television’s most celebrated young ensembles.
Frequently Asked Questions
What did Dustin Diamond claim about Mark-Paul Gosselaar in his book?
In his 2009 tell-all book Behind the Bell, Dustin Diamond made various sensational claims about the cast, including an allegation that Mark-Paul Gosselaar used steroids in 1994. Gosselaar and his castmates strongly denied these allegations, and Diamond later acknowledged that his remarks were distorted and exaggerated by a ghostwriter.
What is Mark-Paul Gosselaar’s ‘Meet Your Mark’ campaign?
The ‘Meet Your Mark’ campaign is an initiative partnered with AstraZeneca that utilizes Gosselaar’s recognizable Saved by the Bell “time out” to educate patients on the necessity of cancer biomarker testing. Biomarkers provide clinicians with detailed insights into genetic and protein signatures, enabling tailored, individual cancer therapies.
What is Mark-Paul Gosselaar’s next acting project?
Gosselaar is set to star in an upcoming comedy series called Bulges, which he describes as a wild workplace comedy set in a restaurant concept comparable to a male version of Hooters.




