Current Studies

You and your twin may receive a letter and/or an email inviting you to participate in one of the following studies. For more information about how we recruit for our studies, click here.

To find out what a study invitation looks like, click here.

To learn about the safeguards that protect UW Twin Registry members who participate in research studies, click here.

If your contact information needs to be updated, please click here.


Brain Regulation of Appetite in Twins (BRAT)


Physical Activity in Twins (PAT)


The Genetics and Epigenetics of Healthy Aging in Twins (HAT)


Health & Wellbeing


Mood and Methylation (MMS)


Genetic Influences on Executive Function and Self-Regulation of Body Mass Index