Life science is a term chiefly used by educators to refer to biomedical topics such as evolution, genetics, anatomy and physiology, or topics that have to do with human society and functioning, such as psychology or anthropology. Life sciences are all scientific fields that deal with the study of life.
Biology is the main scientific field covered by the term, "life science," but social sciences are also sometimes included, as they study the behavior of living beings. Many life sciences are interdisciplinary in nature, either between themselves or combining with other fields outside of the life sciences. For example, neurology often crosses over with psychology as well as with the non-life-science, chemistry.