Contact Us

Please use this form to submit questions to the OHS. If you feel you need more information than what is provided on this website, please call 1-866-606-0686 to speak with a member of our Study Team. Our call centre is open Monday to Friday from 9 a.m. to 5 p.m. Please note that if you leave a voicemail, an OHS call centre responder will return your call. If you are not available at that time, the OHS will leave a voicemail for you if the feature is available.

Please help us identify who you are.

Please include your email address so we can send you a receipt and a reply.

By submitting this question, you consent to have your name and your email address be accessible by the official representatives of the OHS or its privileged members. If you do not wish to give such consent, please do not submit your question.

CAPTCHA
This question is for testing whether you are a human visitor and to prevent automated spam submissions.
13 + 0 =
Solve this simple math problem and enter the result. E.g. for 1+3, enter 4.

Ontario Health Study
MaRS Centre, 661 University Avenue, Suite 510
Toronto, ON Canada M5G 0A3
Phone: 1-866-606-0686