For more than four decades, Dr. Azra Raza has pursued a radical idea at the heart of her acclaimed book The First Cell: What if, instead of chasing cancer to its last cell, we could stop it at the first cell? A renowned oncologist, researcher, author, and lifelong student of poetry, Dr. Raza joins William Shatner and Melanie Shatner Gretsch to explore her quest to transform cancer care, the technology that could make continuous early detection possible, and why the future of medicine may depend on finding disease before it advances. Along the way, they discuss grief, hope, the doctor-patient bond, and what confronting mortality can teach us about making every moment count.

No Time But Now with William Shatner and Melanie Shatner Gretsch is for informational and educational purposes only and does not provide medical advice. The views expressed by the hosts and guests are their own and should not be relied upon as medical guidance. Please consult a qualified healthcare professional regarding any medical condition or treatment decisions.

At four years old, Dr. Dawn Mussallem became fascinated with living to 100—a childhood dream that would shape her life and career in ways she could never have imagined. Diagnosed with stage-four cancer at 26 while in medical school, she went on to survive heart failure, the devastating loss of her husband, a heart transplant, and a near-death experience. In a deeply personal conversation with William Shatner and Melanie Shatner Gretsch, Dr. Mussallem shares how repeatedly facing mortality has only deepened her exuberance for life and her devotion to her patients—and explores the science and everyday choices that can help us all live healthier, longer, and more fully.

No Time But Now with William Shatner and Melanie Shatner Gretsch is for informational and educational purposes only and does not provide medical advice. The views expressed by the hosts and guests are their own and should not be relied upon as medical guidance. Please consult a qualified healthcare professional regarding any medical condition or treatment decisions.

What began as work on a government research project led David Schmidt to an unexpected discovery—and ultimately, an invention he believed could reach far beyond its original purpose. But the inspiration for where he went next came from an even more unexpected place. LifeWave founder David Schmidt joins William Shatner and Melanie Shatner Gretsch to share the remarkable journey behind his company, the ideas that shape his approach to invention, and how his exploration of light and the human body has transformed his thinking about health, healing, and longevity.

No Time But Now with William Shatner and Melanie Shatner Gretsch is for informational and educational purposes only and does not provide medical advice. The views expressed by the hosts and guests are their own and should not be relied upon as medical guidance. Please consult a qualified healthcare professional regarding any medical condition or treatment decisions.

Four Super Bowl rings made Terry Bradshaw a football legend, while decades on television made his larger-than-life personality just as iconic. But this is a side of Terry few get to see. In a remarkably candid conversation with William Shatner and Melanie Shatner Gretsch ahead of his memoir Looking for Terry, Terry opens up about the unlikely kid who dreamed his way to the NFL, facing cancer twice, his questions about faith and mortality, and how those experiences transformed the way he loves his wife, cherishes his family, and chooses to spend the time he has left.

Cancer shattered Katie Couric’s life more than once—but she turned that profound loss into a mission with the same moxie that has defined her trailblazing journalism career. In this conversation with William Shatner & Melanie Shatner Gretsch, Katie reveals how her personal tragedy fueled decades of action—galvanizing awareness, raising hundreds of millions for research, and helping turn scientific discovery into lifesaving breakthroughs.

No Time But Now with William Shatner and Melanie Shatner Gretsch is for informational and educational purposes only and does not provide medical advice. The views expressed by the hosts and guests are their own and should not be relied upon as medical guidance. Please consult a qualified healthcare professional regarding any medical condition or treatment decisions.

Dr. William Li joins William Shatner & Melanie Shatner Gretsch to reveal the rapidly evolving science behind how what we eat can unlock the body’s own ability to defend, repair, and regenerate—and reshape how we heal, age, and thrive.

No Time But Now with William Shatner and Melanie Shatner Gretsch is for informational and educational purposes only and does not provide medical advice. The views expressed by the hosts and guests are their own and should not be relied upon as medical guidance. Please consult a qualified healthcare professional regarding any medical condition or treatment decisions.

Dr. Gabor Maté explores with William Shatner & Melanie Shatner Gretsch how childhood experiences shape our stress responses, relationships, health, and ability to heal.

No Time But Now with William Shatner and Melanie Shatner Gretsch is for informational and educational purposes only and does not provide medical advice. The views expressed by the hosts and guests are their own and should not be relied upon as medical guidance. Please consult a qualified healthcare professional regarding any medical condition or treatment decisions.

Dan Buettner reveals to William Shatner and Melanie Shatner Gretsch why the key to a longer, happier life isn't willpower—it's designing an environment that helps us thrive.

No Time But Now with William Shatner and Melanie Shatner Gretsch is for informational and educational purposes only and does not provide medical advice. The views expressed by the hosts and guests are their own and should not be relied upon as medical guidance. Please consult a qualified healthcare professional regarding any medical condition or treatment decisions.

In the premiere episode, "Our Story," father and daughter share their parallel journeys through stage 4 cancer, reflecting on how facing mortality transformed the way they see the world. Through candid conversation, they explore how surviving the disease gave them a deeper appreciation for life's beauty, purpose, and the preciousness of each day.

Drawing on their shared survival of Stage 4 cancers, William Shatner and Melanie Shatner Gretsch lead a powerful, journey into longevity, resilience, and intentional living through conversations with researchers, wellness experts, spiritual leaders, survivors, physicians, and extraordinary friends whose stories offer wisdom, humor, and hope.