Man develops ‘pork worms’ after years of one specific cooking habit

A 52-year-old man was recently hospitalized with a puzzling medical mystery that had doctors stumped—until a deep dive into his dietary habits revealed an unexpected cause.

For weeks, the patient had been dealing with severe migraines and persistent lower back pain. Brain scans showed cyst-like growths, raising concerns and prompting more thorough tests. What they uncovered was startling: the cysts contained tapeworm larvae.

The diagnosis? Neurocysticercosis—a rare but potentially serious condition caused by infection with Taenia solium, a pork tapeworm. The larvae had migrated to his brain, causing inflammation and triggering the intense neurological symptoms. His recovery required weeks of close medical supervision and a course of anti-parasitic and anti-inflammatory drugs.

The turning point came when doctors asked about his diet. The patient revealed he’d eaten “lightly cooked” bacon for years, preferring it just warmed to avoid the crunch of crisped edges. While this habit may have seemed harmless, it was quickly identified as the probable source of the parasitic infection.

Health officials stress that all pork products—bacon included—should be cooked to an internal temperature of 145°F (62°C) to eliminate parasites and bacteria. Because bacon is so thin, checking its internal temperature is tricky, but it also means it can be fully cooked quickly if watched carefully.

Though neurocysticercosis is rare in the U.S., this case has raised some concerns. According to the patient’s medical team:

“Undercooked pork consumption is a theoretical risk factor.”
“It is historically very unusual to encounter infected pork in the United States, and our case may have public health implications.”

This case offers a sharp reminder: even foods we know and love—like bacon—come with risks if not prepared safely. Undercooking may seem like a personal preference, but sometimes, it comes with unexpected consequences.