Get involved with Children of the 90s
Contact us to see if you're in the study
If you were born between April 1991 and December 1992 in the wider Bristol area, you may be in our study.
To find out if you're a part of it, please get in touch with us with your full name and date of birth via:
- Text: 07772 90 90 90
- Email: info@childrenofthe90s.ac.uk
Already a participant? Update your details here
If you know you're a participant (even if you haven't taken part for years), please update your contact details so we can get back in touch.
Children of the 90s is Bristol’s world-leading health study.
We recruited thousands of pregnant women in 1991 and 1992 and have followed them and their family’s health ever since. The study is exploring all aspects of health and wellbeing, from obesity and liver disease to air pollution and mental health.
As a thank you for taking part in a questionnaire or clinic, we give our participants a shopping voucher. We'll also cover any transport to and from our clinics.

Frequently asked questions
Children of the 90s is what’s known as a longitudinal study – research that follows the same group of people over time. So, while you share a common experience with everyone else in the study (being born in the Bristol area between April 1991 and December 1992), how your life has unfolded since you were born is unique to you.
This makes you irreplaceable, and any data and information you share with us now is as valuable to researchers as it was at the start of our study. The study’s data and samples are helping us to learn about cancer, obesity, heart disease and mental health and more. Put simply, it’s never too late for participants to get involved again, however long you’ve been away!
We understand how busy life can be, so how much time you commit is entirely up to you – you can choose to do as much or as little as you like. Whether it's completing questionnaires, visiting a clinic, or keeping a food/fitness diary for months at a time, just let us know how and when you’d like to take part and we’ll make sure we only contact you with relevant information.
You will be offered an incentive (for example, a shopping voucher) every time you complete a questionnaire or come to clinic, though it’s up to you whether you choose to receive these. We’ll also reimburse your travel costs and even pay for your accommodation if you've travelled a long way to attend a clinic.
We are currently running an invite-only lung function clinic for our original participants (generation 1/G1). We are also running a questionnaire and a sub-study about menstruation. If you're eligible for either study, you will be contacted by email.
We also have our regular questionnaires, which are sent to you via email. You can find out how you can get involved by emailing info@childrenofthe90s.ac.uk with your name and date of birth.
As well as the information you give us via questionnaires and at clinic, we also collect data from your digital records (for example, your NHS records and information about any benefits you may receive). This is called data linkage and it is extrememly valuable for research. Data linkage gives us information that is otherwise difficult to obtain, and information that you may not even know yourself (for example, exact doses of medicine you have been prescribed). Read more about the ways in which we use and safeguard this data (and how to tell us if you do not want us to use these records).
Absolutely! In recent years, we have been following a growing number of Children of the Children of the 90s (COCO90s), making us one of only a few projects we know of to provide scientists with information on three generations. Whatever age your children are, we’d love them to get involved too.
Likewise, we also run pregnancy clinics, so if either you or your partner are pregnant then please let us know.
Of course, we’d love to hear from you. Please text 07772 909090 with your full name and date of birth or drop us a line (info@childrenofthe90s.ac.uk). We look forward to hearing from you.