Tapeworm Spreads Deadly Cancer to Human:

A Colombian man’s lung tumors turned out to have an extremely unusual cause: The rapidly growing masses weren’t actually made of human cells, but were from a tapeworm living inside him, according to a report of the case. This is the first known report of a person becoming sick from cancer cells that developed in a parasite, the researchers said. “We were amazed when we found this new type of disease—tapeworms growing inside a person, essentially getting cancer, that spreads to the person, causing tumors,” said study researcher Dr. Atis Muehlenbachs, a staff pathologist at the Centers for Disease Control and Prevention’s Infectious Diseases Pathology Branch (IDPB). The man had HIV, which weakens the immune system and likely played a role in allowing the development of the parasite cancer, the researchers said.

There’s not a lot I can add to this.

But there are probably more cases like this, if only because gay men seem to contract a lot of parasites:

Fast forward to the spring of 2017. PreP had recently ushered in the second sexual revolution and everyone was now fucking each other like it was 1979. My wonderful boyfriend and I enjoyed a healthy sex life inside and outside our open relationship. Then he started experiencing stomach problems: diarrhea, bloating, stomach aches, nausea. All too familiar with those symptoms, I recommended he go to the doctor and ask for a stool test. … His results came back positive for giardia. … Well, just a few months later, summer of 2017, my boyfriend started experiencing another bout of diarrhea and stomach cramps. … This time the results came back positive for entamoeba histolytica. What the fuck is entamoeba histolytica?! I knew giardia. Giardia and I were on a first name basis. But entamoeba, what now? Entamoeba histolytica, as it turns out, is another parasite common in developing countries spread through contaminated drinking water, poor hygiene when handling food, and…rimming. The PA treating him wasn’t familiar with entamoeba histolytica or how to treat it, so she had to research (Google?) how to handle the infection. The medical literature (Google search results?) led us back to metronidazole, the same antibiotic used to treat giardia.

When your urge to lick butts is so strong that this keeps happening, you’ve got to consider an underlying condition like toxoplasmosis or kamikaze horsehair worm.