Toxicologists are scientists who study the effects of chemicals and substances on living organisms. They investigate how these substances can cause harm, including poisoning and other health issues. Their work is essential in fields like pharmacology, environmental science, and public health, helping to ensure safety in products and the environment. These professionals often conduct experiments and analyze data to understand the mechanisms of toxicity. They may work for government agencies, research institutions, or private companies, assessing risks associated with chemicals in food, drugs, and pollutants. Their findings help inform regulations and safety guidelines.