The field now known as neuropsychopharmacology has resulted from the growth and extension of many previously isolated fields which have met at the core of psychiatric medicine, and engages a broad range of professionals from psychiatrists to researchers in genetics and chemistry. The use of the term has gained popularity since 1990 with the founding of several journals and institutions such as the Hungarian College of Neuropsychopharmacology. This rapidly maturing field shows some degree of flux, as research hypotheses are often restructured based on new information.