Brothers and sisters

We can learn a huge amount about the causes of health and well-being by comparing children from the same family. We also want to gather information so that we can study siblings in their own right. We now have some new funding to look at the health and wellbeing of the brothers and sisters of our original Children of the 90s.

If you are 16 or over and the brother or sister of a Child of the 90s, this is a great opportunity for you to take an active role in one of the world's most important long-term health research projects. We would very much like you to enrol in the project in your own right – not only biological brothers and sisters, but also half, step, foster and adopted brothers and sisters. Please read on to find out.

How to enrol

To enrol as a Children of the 90s brother or sister please print and complete the Siblings enrolment form (PDF, 48kB). You can complete this form even if you think you may already be enrolled.

Please send your completed forms to or Children of the 90s, Oakfield House, Oakfield Grove, Bristol BS8 2BN.

Did you know?

  • Over half of the young people in the study have one sibling (brother or sister)
  • Almost a third have two siblings
  • More than ten percent have three or more siblings

Children of the 90s has become a world-leader in genetic research, analysing the genome – or genetic blueprint – of thousands of participants

BBC News

Taking part in Children of the 90s

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