Blood-borne parasites are important pathogenic organisms that can affect human health through transmission by insect vectors or other routes. Some of these parasites infect blood cells or various tissues and may cause serious medical complications. Their study is relevant to forensic medicine because certain parasitic infections may contribute to severe illness or death. Among the most important blood parasites are those belonging to the genus Plasmodium, which causes malaria. These parasites are primarily transmitted through the bites of infected female Anopheles mosquitoes. Malaria parasites infect red blood cells, and some species, particularly Plasmodium falciparum, may cause severe complications, including profound anemia and organ dysfunction. Another important group includes parasites of the genus Babesia, which infect red blood cells and are commonly transmitted through tick bites. Severe babesiosis may result in hemolysis and serious complications, especially in immunocompromised individuals or patients without a functioning spleen. In forensic medicine, laboratory examination for blood parasites may assist in investigating unexplained deaths when clinical information or autopsy findings suggest a possible parasitic infection. Diagnostic methods include microscopic examination of stained blood smears, immunological assays, and appropriate molecular techniques. Molecular methods such as Polymerase Chain Reaction (PCR) can detect parasite genetic material and may be useful when microscopic identification is difficult. However, interpreting postmortem results requires careful consideration of sample quality and changes occurring in blood and tissues after death. Collaboration among parasitologists, forensic pathologists, and laboratory specialists is essential when evaluating the possible contribution of parasitic infection to death. Detecting a parasite alone does not establish that it was the direct cause of death without supporting pathological and clinical evidence. In conclusion, the study of blood-borne parasites provides an important connection between medical sciences and forensic investigations. It contributes to accurate diagnosis, the interpretation of complex pathological conditions, and scientifically supported forensic conclusions.