The term "cacogenic" refers to traits or characteristics that are considered undesirable or harmful, particularly in the context of genetics and heredity. It is often used in discussions about the inheritance of negative traits that may lead to poor health or social outcomes. The concept is rooted in the idea that certain genetic factors can contribute to a decline in the quality of a population. Cacogenic traits are sometimes contrasted with "eugenic" traits, which are viewed as beneficial or desirable. The discussion around these terms has historical implications, especially in relation to eugenics movements that sought to improve human populations through selective breeding. Understanding cacogenic traits can help in the study of genetics and public health.