In this compelling episode, Dr. Goodyear shares his journey from gynecologist and pelvic floor surgeon to pioneering integrative oncologist after his own battle with a rare adrenal tumor. Now serving at the Williams Cancer Institute, his work focuses on innovative cancer treatments that are showing remarkable results.
What You’ll Learn:
- The Evolution of Cancer Treatment: Dr. Goodyear explains the shift from systemic approaches to tumor-targeted and immune-activating therapies
- IV Vitamin C Therapy: Discover the science behind this powerful treatment and why it’s more effective than oral supplementation
- Repurposed Medications: Learn about evidence-based applications of medications like ivermectin and mebendazole in cancer treatment
- The Gut-Cancer Connection: Understand the critical role of the microbiome in cancer development and treatment
- COVID-19’s Impact: Hear Dr. Goodyear’s observations about how SARS-CoV-2 has affected cancer patients in remission
- Breakthrough Cancer Treatments
Dr. Goodyear brings a wealth of knowledge as the author of “Breaking the Cancer Code: 7 Next-Gen Integrative Oncology Therapies” and host of two podcasts, “Pre-scribed by Dr. Nathan Goodyear” and “Off-ScriptRx.”
Don’t miss this information-packed episode of that could change how you think about cancer treatment options. If you or someone you know is battling cancer, this conversation offers valuable insights into innovative approaches that complement traditional treatments.

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Guest Biography
Dr. Nathan Goodyear, MD, MD(H), ABAARM, FMNM
Dr. Goodyear, an established authority in integrative oncology, possesses extensive knowledge. He earned his Bachelor of Arts from Louisiana Tech University and his Doctor of Medicine from LSU Health Sciences Center. He is Board-Certified in Obstetrics and Gynecology and previously served as Chief Resident in Obstetrics and Gynecology at the University of Tennessee. His primary focus in Obstetrics and Gynecology was pelvic floor surgery. Dr. Goodyear is also a Fellow in Functional and Regenerative Medicine.
For the past seven years, Dr. Goodyear has served as the medical director for two successful integrative cancer clinics in the Phoenix area. In May 2024, he joined the Williams Cancer Institute team to focus on advancing cancer treatment innovations that empower both patients and physicians. He holds medical licenses from the Arizona and California Medical Boards, as well as the Arizona Homeopathic and Integrative Medical Board.
Active in the integrative medicine movement since 2006, Dr. Goodyear has delivered nationwide presentations on diverse topics. He is a highly sought-after speaker and podcaster, frequently discussing high-dose IV vitamin C, vitamin C stacking therapies, Precision Therapy Stacking, medical cannabis in oncology, Low-Dose Metronomic Chemotherapy (LDMC), Insulin Potentiated Therapy (IPT), hyperthermia, and various other natural, holistic, and integrative approaches to cancer treatment. He has also collaborated globally on high-dose intravenous vitamin C and vitamin C stacking therapies for treating both SARS-CoV-2 and cancer.
Dr. Goodyear is an accomplished writer and the published author of three books, including his most recent, Breaking the Cancer Code: 7 Next-Gen Integrative Oncology Therapies. He is an avid blogger on docgoodyear.com, pre-scribed.com, and off-scriptRx.com. He connects with patients and physicians through his podcasts, Pre-scribed by Dr. Nathan Goodyear and Off-ScriptRx.
Additionally, he was featured in the book BOLD Mission: Courageously Pursue Your Calling, authored by international speaker Debra Boblitt. He has been a regular guest on the nationally syndicated Doctor Bob Martin Show and appeared on the Mercola podcast to discuss high-dose vitamin C in cancer treatment.
Dr. Goodyear’s commitment to patient advocacy is unwavering. He is not only a thought leader, passionate entrepreneur, and pioneer in integrative medicine, but also a dedicated advocate for his patients, ensuring their voices are heard and their needs are met.
Show Notes from this episode
- Introduction and Background of Dr. Nathan Goodyear 0:00
- Dr. Barrett introduces Dr. Nathan Goodyear, highlighting his expertise in integrative oncology and the topics to be discussed, including repurposed drugs, IV vitamin C, and the overall landscape of cancer.
- Dr. Goodyear discusses his friendship with Dr. Jason Williams regarding their shared Louisiana connection and their experiences playing college football.
- Dr. Goodyear explains his transition from being a gynecologist and pelvic floor surgeon to focusing on integrative oncology after being diagnosed with a rare adrenal tumor.
- Dr. Goodyear describes his move to Arizona to run an integrative cancer clinic and his current role at the Williams Cancer Institute.
- Challenges in Integrative Oncology 5:27
- Dr. Barrett inquires about the acceptance of integrative oncology by regular oncology, and Dr. Goodyear responds that there is often ignorance or indirect resistance.
- Dr. Goodyear emphasizes that patients are the driving force for change in integrative oncology, with oncologists gradually becoming more interested.
- Dr. Barrett shares his own experience with endoscopic procedures, noting that patient outcomes eventually led to acceptance by traditional medical practitioners.
- Dr. Goodyear discusses the systemic damage caused by traditional cancer treatments like radiation, chemotherapy, and surgery, and the need for a more targeted approach.
- Innovations in Cancer Treatment 12:56
- Dr. Goodyear explains the concept of moving from a systemic-to-tumor approach to a tumor-to-immune activation approach, emphasizing the need for innovation in cancer treatment.
- He highlights the importance of critical thinking and innovation in medicine, advocating for a holistic approach that considers the whole patient.
- Dr. Goodyear discusses the role of the gut microbiome and the tumor microbiome in cancer treatment, noting the interconnectedness of these systems.
- He introduces the concept of intratumoral vitamin C therapy and its potential benefits in cancer treatment.
- IV Vitamin C Therapy and Its Benefits 23:47
- Dr. Goodyear explains the differences between oral and IV vitamin C, noting that IV vitamin C is more effective for cancer treatment due to its direct delivery to the tumor.
- He discusses the pharmacokinetics and pharmacodynamics of vitamin C, including its antibacterial, antiviral, and antiparasitic properties.
- Dr. Goodyear mentions the historical controversy surrounding vitamin C therapy, particularly the Mayo study from 1985, and the misconceptions it created.
- He emphasizes the importance of following the science and the need for continued innovation in cancer treatment.
- The Role of Ivermectin in Cancer Treatment 37:29
- Dr. Goodyear discusses the potential benefits of ivermectin in cancer treatment, noting its anti-inflammatory, anti-angiogenic, and immune-activating properties.
- He explains the differences between treating parasites and cancer with ivermectin, emphasizing the need for a sustained treatment approach for cancer.
- Dr. Goodyear highlights the importance of connecting the dots in medical research and the need for a holistic approach to cancer treatment.
- He discusses the challenges of self-medicating with ivermectin and the importance of medical supervision in cancer treatment.
- The Impact of COVID-19 on Cancer Treatment 47:26
- Dr. Goodyear shares his observations of cancer patients whose remission was disrupted by COVID-19, noting the virus’s impact on the immune system.
- He discusses the potential oncoviral properties of SARS-CoV-2 and its role in cancer development, emphasizing the need for further research.
- Dr. Goodyear highlights the importance of connecting the dots in medical research and the need for a holistic approach to cancer treatment.
- He discusses the challenges of addressing the narrative around COVID-19 and cancer treatment, noting the need for continued advocacy for patient care.
- Concerns About Fenbendazole and Mebendazole 52:48
- Dr. Goodyear expresses concerns about the use of Fenbendazole in cancer treatment, noting its limited research and potential liver toxicity.
- He contrasts Fenbendazole with mebendazole, highlighting the latter’s better research support and FDA approval.
- Dr. Goodyear emphasizes the importance of following the science and the need for proper medical supervision in cancer treatment.
- He discusses the challenges of self-medicating with repurposed medications and the importance of a collaborative approach between patients and doctors.
- Final Thoughts and Closing Remarks 1:00:04
- Dr. Goodyear reiterates the importance of following the science and the need for innovation in cancer treatment.
- He emphasizes the role of patients in driving change in integrative oncology and the need for continued advocacy for patient care.
- Dr. Barrett thanks Dr. Goodyear for his insights and expertise, expressing his appreciation for the conversation.
- The episode concludes with a reminder of the importance of following the science and the need for a holistic approach to cancer treatment.
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