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Why is it Important for Cancer Patients to Stop Smoking?

Stopping smoking is one of the best things you can do to help your cancer treatment work better and reduce the side effects of treatment.

Being smoke-free also reduces the chance of your cancer coming back, or getting another kind of cancer.

An infographic illustrating the health benefits of quitting smoking over time, from 20 minutes to 15 years after quitting.
This infographic, titled “The Benefits of Quitting,” presents a timeline showing how the body heals after a person stops smoking. It includes illustrated icons paired with text at various milestones. At 20 minutes after quitting, blood pressure and heart rate return to normal, shown with a blood-pressure cuff icon. At 8 hours, a nose icon represents easier breathing, normal oxygen levels, and a lowered risk of heart attack. After 24 hours, a pair of lungs illustrates that mucus begins clearing and coughing is a positive sign. At 48 hours, a tongue symbolizes being nicotine-free and regaining the senses of taste and smell. After one year, a heart icon indicates that the risk of heart attack is reduced by half. At 10 years, a birthday-cake icon highlights that the risk of dying from lung cancer is cut in half. Finally, at 10 to 15 years after quitting, a broken cigarette icon represents that the risk of heart disease becomes the same as that of someone who has never smoked. A footer in the infographic credits the information is from SmokersHelpline.ca.

How You Can Do It

Using both counselling and medication can triple your chance of success. Your healthcare providers can help you decide which ways to stop may be best for you. Start by talking to your:

  • cancer care nursing team,
  • family doctor or nurse practitioner
  • local pharmacist
  • local public health unit

Free Support to Help you Stop Smoking

Don’t give up! Start Today

Quitting smoking is a powerful step toward better health, and while it can be challenging, every effort you make counts. It’s normal to face setbacks along the way. What matters most is that you keep moving forward. Be kind to yourself and stay committed.

  • Change the situation. Avoid or leave places that you connect with smoking.
  • Cut back. Slowly reduce the number of cigarettes you smoke each day, also known as “reduce to quit.”
  • Take action. Do something that makes it hard to smoke. For example, chew gum, drink some water, or go for a walk.
  • Think positively. Think about how far you’ve come and do your best to keep going.
  • Ask for help. Talk to a friend, family member or your cancer care team.

The 4 Ds

You can learn how to avoid tobacco by:

  • Delay: Cravings often go away within 3 to 5 minutes, so try to wait it out.
  • Drink Water: Instead of reaching for tobacco, reach for a glass of cold water.
  • Distract: Find something to keep your mind and hands busy.
  • Deep Breathing: It can help you relax and push away the urge to smoke.

This information is provided by Ontario Health in collaboration with Ontario’s Regional Cancer Programs and the Canadian Cancer Society Smokers Helpline.

What is the Single Best Thing You Can Do to Quit Smoking?