Please note that Study recruitment and our Blood Collection Program will be ending on March 31st, 2017. Click here to learn more.

Last chance to join fight against cancer and chronic disease!

The deadline for registering for the Ontario Health Study (OHS) is March 31st, 2017. The Study aims to build a resource for researchers to use now and decades into the future by collecting data and information through questionnaires, physical measurements and blood samples. With more than 230,000 Ontarians participating and a biobank of almost 40,000 blood samples, the OHS is one of the largest long-term health study in Canada. This is your last chance to make this potentially far-reaching contribution to health research.

Find out more


Discovery—It's in your blood.

Provide a blood sample to the Ontario Health Study.

Click here to learn more.

Tell us how you're doing.

Update us on your health by filling out our first follow-up questionnaire.

Click here to learn more.


Is the OHS coming to your community?

March 2017

The Globe and Mail Study Centre
The Globe and Mail Centre,
351 King Street East, Suite 1600, Toronto, Ontario M5A 0N1

March 2, 2017
Thursday, March 2, 10am-3pm

This location is for employees of the Globe and Mail only.

Sign up for the Study and book an appointment

Already an OHS Participant? Login to book an Appointment

Get 

directions

Peterborough Study Centre
Royal Canadian Legion, Branch 52,
1550 Lansdowne Street West, Peterborough, Ontario K9J 2A2

March 6-7, 2017
Monday, March 6, 10am-7pm
Tuesday, March 7, 8am-3pm

This location is wheelchair accessible.
Please note that only blood samples will be collected at this location.

Sign up for the Study and book an appointment

Already an OHS Participant? Login to book an Appointment

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directions

Kingston Study Centre
Royal Canadian Legion, Branch 560,
734 Montreal Street, Kingston, Ontario K7K 3J4

March 8-9, 2017
Wednesday, March 8, 9am-7pm
Thursday, March 9, 8am-4pm

This location is wheelchair accessible.
Please note that only blood samples will be collected at this location.

Sign up for the Study and book an appointment

Already an OHS Participant? Login to book an Appointment

Get 

directions

Mohawk College Study Centre
Mohawk College, MCACES Lounge Room F114,
135 Fennell Avenue West, Hamilton, Ontario L9C 1E9

March 10, 2017
Friday, March 10, 9:30am-5pm

This location is for employees of Mohawk College only.

Sign up for the Study and book an appointment

Already an OHS Participant? Login to book an Appointment

Get 

directions