Hematologic disorders like neutropenia, leukemia, anemia, and thrombocytopenia can influence the periodontium. Neutropenia involves low levels of circulating neutrophils which are important for inflammatory reactions and defense against infection. This makes the tissues more susceptible to destruction from conditions like periodontitis. Leukemia is a cancer of the blood cells that can lead to infiltration of leukemic cells into the gingiva and increased risk of infection. Anemia reduces oxygen delivery and makes tissues more friable. Thrombocytopenia increases risk of bleeding from the gums. Antibody deficiency disorders like agammaglobulinemia compromise immune defenses and can result in early loss of teeth from period