The Ontario Health Study (OHS) will be the biggest community-based health study ever done in Canada. The OHS is a long-term study that will help us understand the causes, prevention and treatment of diseases such as cancer, heart disease, asthma, and diabetes.
Studies like the OHS have led to important discoveries in the past. For example, they have taught us that smoking causes cancer and that diabetes can increase a person’s risk of heart disease. Many thousands of people have participated in previous population-based health studies. As a result, all Canadians have better health care today. Now you have a chance to make a difference for future generations.
The Study is open to all residents of Ontario who are at least 18 years old.
All you need to do is go to our website ( www.ontariohealthstudy.ca ) and complete our initial online questionnaire (takes approxiamtely 20 minutes). Then, every 6-8 months we'll ask you to complete a similar length questionnaire. Following our population over time will allow researchers to see how environment, lifestyle and genes affect the risk of common diseases.