TwinsUK is the UK’s largest adult twin registry and the most clinically detailed in the world.

Professor Tim Spector from King’s College London set up the cohort in 1992 to investigate the incidence of osteoporosis and other rheumatologic diseases in several hundred monozygotic (identical) twins. We now have over 15,000 identical and non-identical twins from across the UK, with ages between eighteen and one hundred and our research has expanded to include multiple diseases and conditions.

TwinsUK aims to investigate the genetic and environmental basis of a range of complex diseases and conditions. Current research includes the genetics of metabolic syndrome, cardiovascular disease, the musculoskeletal system, ageing, sight as well as how the microbiome affects human health. The TwinsUK cohort is now probably the most genotyped and phenotyped in the world.

TwinsUK data have enabled multiple collaborations with research groups worldwide and the publication of over 700 research papers.