Soil-Transmitted Helminths (STH) are parasitic worms that live in the intestines of humans and animals. They are transmitted through contaminated soil, often affecting people in areas with poor sanitation. Common types of STH include roundworms, whipworms, and hookworms. These worms can cause various health issues, including malnutrition and anemia, especially in children. Preventing STH infections involves improving hygiene practices, such as washing hands and ensuring access to clean water. Additionally, regular deworming programs can help reduce the number of infections in vulnerable populations. By addressing these issues, communities can improve overall health and well-being.