The examination of parasites in human and environmental samples is a scientific approach that may contribute to understanding certain circumstances surrounding death and forensic investigations. Parasites or their developmental stages may be found in human tissues, gastrointestinal contents, or environmental samples associated with the location where a body is discovered. Such findings may provide additional information about previous health conditions and possible environmental exposure. Parasites differ in their life cycles, transmission routes, and environmental distributions. Some are transmitted through contaminated food and water, while others are associated with soil or arthropod vectors. Understanding these biological characteristics can help forensic specialists interpret the presence of particular parasites in samples collected during postmortem examinations. Intestinal parasites such as Trichuris trichiura and Ascaris lumbricoides are relevant examples because their eggs may persist in certain environments for relatively long periods. Detecting these eggs in intestinal contents or environmental samples may provide information about previous exposure to infection. However, such findings cannot independently determine the exact time or location of death. The examination of parasites associated with animals, soil, or water near a crime scene may also contribute to understanding the environmental characteristics of a location. Comparative parasitological analysis can sometimes provide supporting information when examining samples from different sites, particularly when reliable reference data are available. Laboratory techniques used in these investigations include microscopic examination, specialized staining procedures, and molecular analysis. Proper sample collection, documentation, and preservation are essential because contamination and decomposition may influence the reliability of results. It is important to distinguish forensic parasitology from forensic entomology. Forensic entomology focuses on insects associated with decomposing remains and may use insect developmental stages to estimate the minimum period since insect colonization. In contrast, forensic parasitology focuses on detecting parasitic organisms and interpreting their medical and environmental significance. In conclusion, parasites may provide additional scientific information in selected forensic investigations. Their evidential value depends on the parasite species, sample characteristics, and circumstances of the case. Integrating parasitological findings with medical, environmental, and other forensic evidence can improve the reliability of scientific interpretations.