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The World Health Organization estimates that adopting healthy lifestyle habits could prevent 30% to 50% of all cancer cases. In other words, there are things you can do that will positively impact your health. Here are a few recommendations for decreasing your risk of developing cancer.
Primary cancers/areas of the body involved: lungs, head and neck (ENT), esophagus, bladder, kidneys, and uterus.
Tobacco is the leading cause of cancer in Quebec. Living smoke-free is still the best way of decreasing the risk of developing cancer. Tobacco smoke contains over 7,000 chemical substances, 80 of which have been shown to increase the likelihood of developing cancer.
People who want to quit smoking can receive assistance and support, free of charge, from their pharmacy or through the government program I QUIT NOW. The government program I QUIT NOW offers support services from healthcare professionals. People interested in the program can register by calling 1-866-527-7383 or by going to the Tobacco-Free Website, at: https://www.tobaccofreequebec.ca/iquitnow.
It is also recommended to avoid vaping, even though electronic cigarettes are not as harmful as traditional tobacco products. Second-hand smoke also poses a health threat and should be avoided whenever possible.
Primary cancers/areas of the body involved: mouth, esophagus.
Alcohol consumption, even in small amounts, increases the risk of cancer. The more one drinks, the greater the risk.
Alcoholic beverages contain ethanol, a product that, once ingested, transforms into compounds that promote the development of cancer. A glass of wine has the same carcinogenic effect as a drink containing hard liquor!
To learn more:
The negative health effects of alcohol are compounded in the presence of tobacco use. Consuming both at any given time significantly increases the risk of developing various cancers, most notably of the mouth, pharynx, larynx and esophagus.
Primary cancers/areas of the body involved: skin (various cancers, including melanoma).
Several studies have clearly shown that excessive exposure to sunlight equals a greater risk of skin cancer, especially melanoma. Over 80% of skin cancer cases are related to overexposure.
With the progressive depletion of the ozone layer that serves as a protection against the sun’s rays (also called UV rays), adopting good habits is more pressing than ever.
Regardless of the colour of your skin and whether or not you are prone to getting sunburnt, protecting your skin is extremely important. It is recommended to apply sunscreen with a protection index of 30 or more. Seek out shade and wear a long-sleeved top as well as a hat or cap. Applying sunscreen reduces the risk of developing actinic keratosis, lesions that can lead to skin cancer.
Examine your skin regularly, and seek medical advice if you notice any suspicious lesions or anomalies.
Also, avoid tanning salons, as the very high doses of cancer-causing UVA rays generated by tanning beds increase the risk of developing cancer.
Check out our section on skin cancer screening.
To learn more about how you can protect yourself from the sun’s rays and examine your skin for any issues, go to https://www.saveyourskin.ca/prevent.

Primary cancers/areas of the body involved: breast (post menopause), colorectal, endometrium, esophagus, kidneys, pancreas, and liver.
There is no miracle cure to reach or maintain a healthy body weight. Focusing on healthy eating and participating in physical activity (e.g., speed walking) every day is particularly important.
Existing studies indicate that people who are overweight or obese have a greater risk of developing cancer, especially cancers associated with hormones. Notably, certain hormones have been observed in greater numbers in people carrying excess pounds.
Being overweight or obese also favours chronic inflammation. The multiplication and high number of certain inflammatory molecules can encourage cell mutations.
Primary cancers/areas of the body involved: colorectal, bladder, kidneys, stomach, breast and endometrium (uterus).
Studies have clearly determined that physical activity significantly decreases the risk of developing certain cancers. Physical activity, moreover, is not simply sports but includes all of a person’s movements throughout the day (at home, work or elsewhere) that result in energy being expended.
The World Health Organization (WHO) recommends that adults do at least 150 minutes (2.5 hours) of physical activity every week. If you are not active, begin slowly. What matters is that you move more and stay seated less often.
Physical activity is also recommended for people with cancer, as it has the effect of decreasing the fatigue resulting from the disease itself and the related treatment. It essentially improves the quality of life. The effectiveness of physical activity is well-known and experts recommend that people with cancer participate while and after cancer treatments.
For more tips on how to improve your health through physical activity, click here.

No one superfood can on its own prevent cancer. However, certain foods are associated with a decreased risk of cancer, while the opposite is true for other types of food. It is therefore important to eat a variety of food items and strive to eat more nutritious items and fewer of the foods associated with a greater risk of developing cancer.
Eat more:
Eat less:
Decrease the risk associated with several cancers: colorectal, stomach, esophagus, head and neck (ENT), lung, bladder, etc.
Eating fruits and vegetables regularly is the foundation of a healthy diet. Tip: when preparing a meal, make sure that at least half of the plate will consist of fruits or vegetables.
Primary cancer/area of the body involved: colorectal.
A diet rich in fibre and whole grains decreases the risk of colorectal cancer. Fibres promote good digestion and also generate a sense of fullness, which makes it easier to not overeat. According to Health Canada, most people do not eat enough fibre. Foods with a high fibre content include certain vegetables, whole-grain products, fruits, legumes and nuts.
For more tips on how to increase your fibre intake, click here.
Primary cancers/areas of the body involved: colorectal, stomach, breast, and prostate.
Red meat includes all butchered meat other than poultry products; in other words, beef, pork, veal and lamb. Deli meats are processed or transformed meat products, meaning that they have been either smoked, dried or salted. Ham and bacon are examples of deli meats. It is generally recommended to replace red meat and deli meats with other protein sources: fish, poultry, nuts and legumes.
Here are a few tips for reducing your consumption of red or processed meat.
Primary cancer/area of the body involved: stomach.
Studies have revealed that a high salt intake combined with salty food items increases the risk of stomach cancer.
To decrease your salt intake, season meals with spices and herbs instead of salt, read the labels on processed food packages to make low- or reduced-sodium choices, and finally, cut back on snacks.
*Canada’s Food Guide is a useful tool in support of sound choices and healthier eating.
While some viruses can cause cancer, there are vaccines that can help mitigate this risk. Consult your physician or pharmacist to see whether these vaccines are recommended in your specific case.
Primary cancers/areas of the body involved: uterine cervix, anus, vagina, vulva, penis, head and neck (ORL).
It is believed that the majority of Quebecers will be infected by an HPV over their lifetime, but that most will never be aware that it occurred. While the virus disappears after a few years in most people, the infection can sometimes persist and transform into cancer.
There are over 100 types of HPV, which can infect countless areas of the body. Some types of sexually transmitted HPV can cause cervical cancer, anal cancer, cancer of the genitals (vagina, vulva, penis) as well as some types of head and neck (ORL) cancers.
Vaccination is the best protection against HPV and the related cancer risk. In Quebec, two HPV vaccines are offered free of charge as part of the Québec Immunization Program. The free immunization schedule provides for one vaccine dose in Grade 4 of primary school, followed by a second dose 60 months later, in Secondary 3. People who are not eligible for free vaccination under the Québec Immunization Program can receive the vaccine but will be responsible for the associated cost.
To learn more about the program and the available vaccines, go to the Government of Québec Website.
Primary cancer/area of the body involved: liver.
Hepatitis is an inflammation or infection of the liver, more often than not as the result of a virus. There are different types of hepatitis viruses, two of which can leave a person at greater risk of developing liver cancer: the hepatitis B virus (HBV) and the hepatitis C virus (HCV). HBV and HCV can cause a long-term infection that increases the risk of developing liver cancer. A vaccine against hepatitis B is available, and there is also a vaccine that offers protection against both hepatitis A and hepatitis B. There is not, however, a vaccine that offers protection against hepatitis C.
The Québec Immunization Program provides for the administration of a combination vaccine against hepatitis A and B. The vaccine is also offered free of charge to people who are increasingly at risk of contracting these infections.
To determine whether vaccination against hepatitis B could help decrease your risk of developing cancer, check out the Government du Québec Website.

Primary cancer/area of the body involved: lungs.
Radon is a radioactive gas that occurs naturally in the soil. It can enter homes through the foundation. You cannot see it or smell it. When present in high concentrations, it increases the risk of lung cancer. Testing your home is important. If radon levels are too high, there are ways to reduce them.
For a very accurate measurement, it is recommended to use a small detector called a dosimeter for 3 to 12 months. For about $50, you can purchase one from the Quebec Lung Association or CAA-Quebec, in-store or online. Some municipalities reimburse part of the purchase cost. Check with your municipality.
Radon can also be measured using an approved electronic monitor left in place for at least one month. If the reading reaches 100 Bq/m³ or higher, it is recommended to continue measuring for two additional months or to use a dosimeter. Some municipal libraries and the Quebec Cancer Foundation offer free loans of electronic radon detectors.
To learn more about radon and how to reduce it, visit canada.ca.
To find out how some municipalities are helping residents take action on radon, consult the municipal initiatives guide co-written by the Quebec Cancer Foundation.
Self-evaluation and screening are measures that can help detect changes in the body that could develop into cancer if left untreated. The sooner a cancer is detected, the higher the survival rate.
Over the past few years, there has been an improvement in the means introduced by the government to help citizens with cancer screening and new programs have been launched in this regard.
For more information on the cancer screening programs available in Quebec and self-evaluation techniques, check the Cancer screening section of our Website.
If you are without a family doctor but worry that you are presenting with signs or symptoms of cancer, contact the Primary Care Access Point (GAP), by dialling 811, and then selecting option 3. The personnel will direct you to a relevant healthcare professional.
Studies conducted over the past few years have shown that other daily actions can help prevent cancer. More to the point:
All of the data available under the Information about cancer section of our Website has been checked, validated and documented by scientific publications. Reach out to the Quebec Cancer Foundation at [email protected] to learn more.
Content updated in July 2024