Hookworm is a type of parasitic worm that primarily infects the intestines of humans. These small, thin worms attach to the intestinal wall and feed on blood, which can lead to anemia and other health issues. Hookworm infections are most common in tropical and subtropical regions, where sanitation and hygiene practices may be inadequate. The life cycle of hookworms begins when their eggs are excreted in feces. Once in the soil, the larvae develop and can penetrate human skin, often through bare feet. Preventive measures include wearing shoes, improving sanitation, and regular health check-ups to detect and treat infections early.