it turns out that worms are really bad for you, playing a major factor in many chronic disease processes. This includes anxiety, obesity, autism, OCD, brain fog, mood swings, insomnia—parasites are active at night—liver problems and, as just mentioned, possibly even cancer. Perhaps they affect brain function directly. Stories about parasite-infected “hijacked suicidal zombie” snails or fish launching themselves right into the arms of their predators have raised eyebrows among biologists—could similar behavior manipulation happen to human hosts?