Helminthes, commonly referred to as "helminths," are parasitic worms that can inhabit the intestines or other tissues of various hosts, including humans and animals. They are classified into three main groups: nematodes (roundworms), cestodes (tapeworms), and trematodes (flukes). Helminths can cause a range of health issues, from mild discomfort to severe diseases, depending on the type and number of worms present. These organisms typically enter the host through contaminated food, water, or soil. Once inside, they can reproduce and grow, leading to infections that may require medical treatment. Prevention strategies include proper hygiene, sanitation, and cooking food thoroughly to reduce the risk of helminth infections.