Cancer Advisor

Abstract Background Repurposed antiparasitic agents including Ivermectin, Fenbendazole, and Mebendazole have gained substantial public attention as potential adjunctive therapies for colorectal cancer. Online compilations of anecdotal reports have expanded rapidly following social media amplification, celebrity endorsements, and physician-curated testimonial series. ( onedaymd.com ) Objective To systematically reorganize and critically analyze 79 published colorectal cancer case reports and testimonials involving ivermectin-, fenbendazole-, or mebendazole-based regimens, with emphasis on tumour biology, metastatic patterns, regimen heterogeneity, evidence hierarchy, and potential sources of bias. Methods A structured qualitative evidence-mapping analysis was conducted using publicly available case reports and testimonials compiled in a widely circulated colorectal cancer review article published by OneDayMD. Cases were stratified by cancer subtype, disease stage, metastatic distrib...

By Editorial Team | Medically reviewed and updated | Last updated: July 2026 | Consolidates and supersedes the six-part Warburg Effect series (June 2026) and "The Warburg Effect Revisited in 2026" (May 2026) Quick Answer The Warburg Effect is the century-old observation that many cancer cells generate energy through aerobic glycolysis — converting glucose to lactate even when oxygen is abundant — rather than relying primarily on mitochondrial oxidative phosphorylation. It is not caused by broken mitochondria, as Otto Warburg originally believed; it is driven by oncogene signaling (KRAS, MYC, HIF-1α, PI3K-AKT-mTOR) that rewires metabolism to supply the building blocks of rapid growth. The strongest Warburg phenotype tends to appear in the most aggressive cancers — pancreatic cancer, glioblastoma, small-cell lung cancer, and triple-negative breast cancer among them — and underlies the entire field of FDG-PET imaging. As of 2026, dozens of drugs and nutraceuticals a...