A helminth is a type of parasitic worm that can live in the intestines or other parts of the body of its host. Common types of helminths include tapeworms, roundworms, and flukes. These organisms can cause various health issues, including malnutrition and gastrointestinal problems, as they absorb nutrients from their host. Helminths are typically transmitted through contaminated food, water, or soil. They can be diagnosed through stool tests or imaging techniques. Treatment often involves antiparasitic medications, which help eliminate the worms from the body and alleviate symptoms associated with the infection.