Fenbendazole and Ivermectin in Cancer Care: What the Research Actually Shows

A clinical nutritionist's review of mechanisms — including p53 reactivation, microtubule disruption, glycolysis inhibition, and immune synergy — for two of the most-discussed repurposed antiparasitics in integrative oncology.

Researched and written by Keith Bishop, Integrative Cancer Educator, Cancer Coach, Clinical Nutritionist, Retired Pharmacist, and Founder of Prevail Over Cancer.

You've heard the names. A friend mentioned them. A YouTube video swore by them. A Facebook group of 100,000 members says they cured stage IV cancer. And your oncologist either rolled their eyes or warned you against them.

So what is actually true about fenbendazole and ivermectin in cancer care?

After three decades as a pharmacist and now as a clinical nutritionist and cancer coach working with patients every day, I want to walk you through what the published research actually shows — the mechanisms, the preclinical data, th...

Researched and written by Keith Bishop, Integrative Cancer Educator, Cancer Coach, Clinical Nutritionist, Retired Pharmacist, and Founder of Prevail Over Cancer.

The Big Idea in Plain Language

Binders are sticky on the inside. They grab things. That sounds helpful when the thing is a toxin or a heavy metal. But binders are not smart. They cannot tell the difference between a toxin, your prescription drug, your fish oil, and the iron in your dinner.

If you take a binder at the wrong time, you can block the very things that are keeping you alive and helping you heal.

This blog walks you through what each binder does, what it can take from you, and how to time them safely. We will also look at the rare times binders are truly needed.

Quick Look at the Big Five Binders

Prevail. Assess. Don't Guess.™

By Keith Bishop — Clinical Nutritionist, Cancer Coach, Retired Pharmacist, Integrative Oncology Educator, and Founder of Prevail Over Cancer LLC™ and the Prevail Protocol™

IMPORTANT — Please Read Before Using This Document

This article is for educational purposes only. It does not replace medical advice from your oncologist, physician, or licensed clinician. These statements have not been evaluated by the Food and Drug Administration. Supplements are not intended to diagnose, treat, cure, or prevent any disease.

Why the Scoop You Choose Actually Matters

A morning smoothie is one of the easiest places to load real anticancer firepower into your day — phytochemicals from berries and cruciferous sprouts, omega-3s, fiber, and protein to hold your blood sugar steady and protect your lean mass during treatment. But the protein powder you choose can either support the goals of your integrative oncology plan or quietly work against them.

Three filter...

What grapefruit, limes, and lemons do to your skin — and why I follow the Six-Hour Rule before sunshine

Researched and written by Keith Bishop, Clinical Nutritionist, Cancer Coach, Retired Pharmacist,
Integrative Oncology Educator and founder of the Prevail Protocol™

IMPORTANT — Please Read Before Using This Document

The information presented here is for educational purposes only and is not intended as medical advice, diagnosis, or treatment. Always consult your healthcare provider before making changes to your diet, lifestyle, or supplement program.

*Statements regarding dietary supplements have not been evaluated by the Food and Drug Administration. Supplements are not intended to diagnose, treat, cure, or prevent any disease.

The Hidden Skin Cancer Risk of Citrus and Sun Exposure

What grapefruit, limes, and lemons do to your skin — and why I follow the Six-Hour Rule before sunshine

Citrus fruits are celebrated for their vitamin C, flavonoids, and antioxidant power. But...

How to shop strategically, reduce pesticide exposure, and wash your produce the right way — including the evidence-based baking soda method.

If you or someone you love is navigating a cancer diagnosis, the food choices you make every single day matter. Not just in terms of nutrition, but in terms of what may be riding along on your produce when it arrives at your plate.

Every year, the Environmental Working Group (EWG) analyzes data from the U.S. Department of Agriculture (USDA) and the Food and Drug Administration (FDA) to identify which fruits and vegetables carry the highest — and lowest — levels of pesticide residues. Their findings are published as two iconic lists: the Dirty Dozen™ and the Clean 15™.

At Prevail Over Cancer, we follow the principle: Prevail. Assess. Don't Guess.™ That means making informed decisions grounded in real data — including the data on what's sprayed on your food.

This guide will walk you through both lists, explain why pesticide exposure matters in t...

Broccoli Sprouts and Cancer: The Complete Science of Sulforaphane

If you add only one food to your anticancer nutrition plan, the research points strongly to one answer: broccoli sprouts. These tiny, unassuming seedlings — available at most grocery stores or easy to grow at home — contain concentrations of the most well-studied anticancer phytochemical on Earth.

That compound is sulforaphane (SFN) — an isothiocyanate derived from cruciferous vegetables that has now been investigated in over 3,000 published studies. And unlike many "superfoods" hyped on social media, sulforaphane's mechanisms are deeply understood at the molecular level, spanning cancer prevention, cancer stem cell targeting, chemotherapy enhancement, radiation sensitization, and immunotherapy support.

This research blog compiles everything the current science tells us about broccoli sprouts and cancer — including how sulforaphane works, how to maximize the amount you produce and absorb, and how it interacts with ...

Researched and Written by Keith Bishop, Clinical Nutritionist, Cancer Coach, Retired Pharmacist, and founder of Prevail Over Cancer and the Prevail Protocol

Why Should We Consider Short-Term Fasting During Chemotherapy Treatments?

Short-term fasting (STF) has shown promise in enhancing the efficacy of cancer treatments while protecting healthy cells from toxicity. Studies suggest that STF can slow tumor growth and improve the quality of life for cancer patients.

Short-term fasting (STF) has shown promising effects on cancer cells in the human body, according to several medical journal references. Here are some key findings:

1. Differential Stress Resistance (DSR): STF protects healthy cells from the toxic effects of chemotherapy while making cancer cells more vulnerable to treatment. This is because healthy cells can enter a maintenance and repair mode during fasting, while cancer cells, which rely heavily on glucose, struggle to adapt.
2. Enhanced Chemotherapy Efficacy: Preclinica
...

Understanding fungal DNA in cancer tumors, terrain imbalances, antifungal foods, and how metabolism shapes fungal behavior in the body.

Researched and written by Keith Bishop, Clinical Nutritionist, Cancer Coach, Retired Pharmacist, and Founder of Prevail Over Cancer and the Prevail Protocol. 

 Why Fungi Are Being Found in Human Tumors

Large sequencing studies have confirmed that low-abundance fungal DNA and fungal cells appear across multiple cancer types — including breast, lung, GI, melanoma, and gynecologic tumors. These findings do not indicate infection and do not establish fungi as carcinogens. Instead, they highlight fungi as ecological participants within the tumor microenvironment.

• The Cell pan‑cancer analysis identified cancer‑type-specific fungal signatures, often co-occurring with distinct bacterial communities and immune phenotypes.
• A second Cell study confirmed the presence of fungi in GI and lung tumors and demonstrated associations with immune infiltration...

Keith Bishop, Clinical Nutritionist, Cancer Coach, Retired Pharmacist, Founder of Prevail Over Cancer

Hey, Prevail Over Cancer Community!

I'm thrilled to share a significant update with you. After careful consideration, I’ve decided to transition from my full-time general health clinical nutrition practice to focusing full-time on cancer coaching. This change is not just about me but about you. It allows me to concentrate on my true passion—helping people like you navigate the challenges of cancer with personalized guidance and support, offering you a more focused and specialized service.

Why the shift? Over the years, I've had the privilege of working with many outstanding individuals fighting cancer. Your resilience and determination have inspired me deeply. I want to dedicate my full energy and expertise to supporting you on this journey, offering specialized insights and strategies that can make a real difference in your quality of life.

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