About Cancer in Ontario
Cancer cases in Ontario are rapidly increasing due to an aging and growing population.
Survival has improved for many of those diagnosed with cancer in the past several years. However, this is not true for all cancer types.
Lung, colorectal, breast, and prostate cancer account for the top four newly diagnosed cancers in Ontario.
Due to a variety of factors—including advances in detection (e.g., organized screening) and treatment – there is an improved five-year relative survival ratio for most cancers in Ontario. Most significantly, the greatest relative improvements in survival have occurred for cancer of the pancreas, leukaemia and non-Hodgkin’s lymphoma. Despite these gains, five-year relative survival ratios for some cancers remain consistently low, notably pancreas, lung and stomach cancers.
In 2017, an estimated 29,600 people died of cancer in Ontario, and 80,700 new cases were diagnosed.
Lung cancer is the most common cause of cancer death among both men and women. An estimated 3,700 men will die of lung cancer and an estimated 3,400 women will die of lung cancer in Ontario this year.
Colorectal cancer is the second-leading cause of cancer deaths for men and the third-leading cause of cancer deaths for women in Ontario.
Prostate cancer is the most commonly diagnosed cancer of men. An estimated 8,500 men in Ontario were diagnosed with prostate cancer in 2017.
Breast cancer is the most commonly diagnosed cancer of women. An estimated 10,100 women in Ontario were diagnosed with breast cancer in 2017.
Source: Cancer Care Ontario and Canadian Cancer Society
About Cancer in Canada
Cancer is the leading cause of death in Canada, and is responsible for over 30 percent of all deaths.
An estimated 1 in 2 Canadians will develop cancer in their lifetimes, and 1 in 4 will die from it.
In 2017, an estimated 206,200 new cases of cancer and 80,800 cancer deaths occured Canada.
Approximately 103,200 Canadian women and 103,100 men will be diagnosed with cancer in 2017.
Every day, 565 Canadians will be diagnosed with cancer and 221 will die. Every hour, an estimated 24 people will be diagnosed with cancer, and nine will die.
Breast cancer remains the most common cancer diagnosed in women, with an estimated 26,300 new cases reported in 2017.
Prostate cancer remains the most commonly diagnosed cancer in men, with an estimated 21,300 new cases reported in 2017.
Lung cancer remains the leading cause of cancer death for both sexes. It is responsible for approximately equal proportions of all cancer deaths in both males and females.
Four cancers – prostate, breast, lung and colorectal – together accounted for more than half (about 50 percent) of all new cases diagnosed in Canada in 2017.
Cancer primarily affects Canadians over the age of 50, as 89 percent of all new cases are diagnosed in people in this age group.
For both Canadian men and women, the median age of cancer diagnosis is between 65 and 69 years of age.
In 2017, it is estimated that 90 percent of all cancers diagnosed in Canadians age 50 years and over, while 45 percent will occurred in Canadians 70 years of age and older.
Increases in the number of new cases are largely due to a growing and aging population.
In 2009, about 810,045 Canadians diagnosed with cancer in the previous 10 years were alive. This represented about 2.4 percent of the Canadian population or 1 out of every 41 Canadians
Source: Canadian Cancer Society