The Swedish Twin Registry, managed by the Karolinska Institutet is the largest of its kind and has become an invaluable resource for medical research.

The Swedish Registry was established in the 1960s to study how smoking affects our health. Then little was known about the dangers of smoking.

There is, at present, information on approximately 85 000 twin pairs, both monozygotic and dizygotic. There are currently about 30 ongoing projects based on the Swedich Twin Registry. The studies cover a wide range of public health issues among others a focus on dementia diseases, allergies, cancer and cardiovascular diseases.

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