The Swedish Twin Registry
The Swedish Twin Registry, managed by Karolinska Institutet is the largest of its kind and has become an invaluable resource for medical research. The Swedish Twin Registry was established in the 1960s and contains information about some 85 000 twin pairs for which zygosity is known, both mono- and dizygotic pairs. At present there are approximately 30 projects ongoing based on data from the registry. The studies cover a variety of topics concerning public health issues such as allergies, cancer, dementia and cardiovascular disease.