andheiltölu

Andheiltölu is an Icelandic term that refers to a standardized catalog of hereditary diseases used in medical genetics and public health. The word is a compound of andheilt, meaning inherited or congenital, and lö, an abbreviation of "lístur" (list), thus literally "inherited list." It is employed primarily in the national genetic counseling services, where doctors and counselors consult the andheiltölu to determine the likelihood of a child inheriting certain conditions based on family history. The list is updated regularly to include new findings from genomic research and to reflect changes in the prevalence of particular disorders in Iceland’s population.

The andheiltölu was first published in the Icelandic Directorate of Health in the early 1990s, at a time when the country was building a comprehensive cohort study of its residents. The registry originally contained a limited set of well‐studied conditions such as cystic fibrosis, hereditary hemochromatosis, and familial gout. Over time it expanded to include a wider range of autosomal dominant, autosomal recessive, and X‑linked diseases, and also annexed information on carrier frequencies and recommended screening protocols.

Despite its official status, the andheiltölu is not intended to be exhaustive; other international databases such as ClinVar and OMIM provide supplementary details for clinicians. Nevertheless, it remains a key resource for Icelandic health professionals, serving both clinical decision‑making and public health planning. The catalog supports the country's genetics research, helping to identify patterns of disease inheritance unique to the Icelandic population and informing targeted prevention strategies.