Debunked Myths

The dangerous myth that sharks don't get cancer was popularized in the 1990s by a book promoting shark cartilage as a miracle cancer treatment. The theory suggested cartilage contained compounds that inhibited tumor growth, but the central claim was scientifically bankrupt from the start.

Marine biologists have documented numerous tumors in at least 23 shark species, including cancers in their liver, skin, and even cartilage itself. Despite this clear evidence, supplement manufacturers ignored the science, creating a multi-million dollar industry that preyed on desperate cancer patients.

The consequences extended beyond fraud—this myth contributed significantly to shark overfishing, devastating populations of these crucial ocean predators. Sharks do have remarkable immune systems and healing abilities, but they're not magical cancer-free beings. This story serves as a stark lesson in how profitable pseudoscience can override facts, causing both human suffering and ecological damage.