Contact us

Where can I find additional information?

We will continually be updating this website, so please visit often!

You can also call us at 1-866-606-0686 to speak with a member of our Study team who can answer your questions.

What if I have concerns?

Please contact us if you have concerns or wish to make a complaint. We take all of your questions and comments very seriously and we will respond as quickly as possible.

  • Call us at: 1-866-606-0686.
  • Write to us at: Ontario Health Study, Head Office, 620 University Avenue, 11th floor, Toronto ON M5G 2L7
  • Send us an email.
  • Contact the Ontario Health Study Privacy Lead if you have any questions or concerns about your privacy rights: privacy@ontariohealthstudy.ca or 416-971-9800 x 3200
  • Contact the Ethics Review Office at the University of Toronto at: ethics.review@utoronto.ca or 416-946-3273