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Nutrition Information

Good nutrition is vital at every stage of your cancer treatment and recovery.

Eating well gives you energy, helps you feel better and keeps your body strong so that you can better manage side effects from treatment. It will also help you heal and recover after treatment.

What do I eat after a cancer diagnosis?

Some people find they are unable to eat well due to side effects from their cancer or cancer treatment. If you have lost weight without trying or have difficulty eating please see our Nutrition Handouts or ask to speak to a registered dietitian at your cancer centre.

If you do not have difficulty eating it is recommended that you follow a balanced diet throughout your cancer journey including after diagnosis, during treatment and after treatment.  This can help to reduce your risk of cancer, cancer recurrence and other diseases. The World Cancer Research Fund and the American Institute for Cancer Research recommends that you:  

  • Focus your diet on plant foods such as whole grains, vegetables, fruits and pulses (legumes).  Aim to fill at least two-thirds of your plate with plant foods.
  • Limit 'fast foods' and other processed foods high in fat, starches or sugars.
  • Limit red meat (beef, pork, lamb, and goat) to less than 500g (18oz) per week and avoid processed meats.
  • Limit sugar-sweetened beverages.
  • Limit alcohol consumption.
  • Do not use supplements for cancer prevention.
  • Maintain a healthy weight.
  • Be physically active.

To read more see the 'More information' tab above. 

Do you have nutrition questions? For individual diet advice you can speak to an oncology dietitian at HealthLink BC by calling 8-1-1 from anywhere in BC.

Common questions

‎Sugar does not directly cause cancer or cause cancer to grow faster.  Glucose, a simple sugar, found in most carbohydrate foods (including added sugar, grains, cereals, beans, fruits, vegetables, and dairy) is the main energy source for all cells, including cancer cells.  Just like healthy cells, cancer cells need a blood supply, oxygen and energy to grow.  Limiting all sources of carbohydrate will not starve cancer cells and may negatively affect your healthy cells.  Your body needs energy and may use your muscle and fat tissue for energy, which is not recommended. 


Many healthy foods such as whole grains, cereals, beans, fruits, naturally contain sugar along with vitamins, minerals, fibre and phytonutrients.  Eat a variety of foods and limit table sugar (white or brown), soft drinks, sweet baked goods (cookies, cakes) and processed foods that contain large amounts of added sugar. 


For more information, see our Sugar and Cancer handout. You can read more about the sugar-cancer connection on the American Institute for Cancer Research website. The Academy of Nutrition and Dietetics also addresses the question "does sugar feed cancer". 

‎Supporters of an alkaline diet claim that cancer growth can be slowed or stopped by following a diet that makes the body more alkaline.  The acid-alkaline level in the body is very tightly controlled.  Eating more alkaline foods will not make your blood more alkaline, but it can change your urine alkalinity.  Extra acidic or alkaline substances don't build up in the blood because they are removed in the urine to keep the blood within a narrow and slightly alkaline range.  Choose foods for their nutritional content and taste and not how they claim to change the acid or alkaline level in your body. 

Visit the American Institute for Cancer Research (AICR) blog if you are interested in reading more about alkaline diet and cancer.

If you'd like to read about what to eat after a cancer diagnosis please click on the Recommendations tab above. 

Pesticides used in farming have the potential to build up in the body, which has caused concern for the risk of developing cancer. Current evidence suggests there may be a possible association between pesticides and some cancers. There is evidence both for and against a link between pesticides and the risk of developing cancer and more research is needed. To reduce your risk of pesticide exposure, buy foods that are locally grown, in season and be sure to peel and wash vegetables and fruits well.  
Buying organic food is an individual choice based on personal values, availability and cost.  Overall, it is believed that the potential risks associated with pesticides are not as great as the nutritional value of plant foods and their role in cancer prevention and promoting good health.  Therefore whether you choose organic or not it is important to eat a diet rich in fruits and vegetables and obtain the recommended servings each day.


Organic vs Conventional Food: Understanding the Difference & Implication for Health is a presentation by Jesse Veenstra (PHSA Mobile Medical) from 2013. 

Having cancer does not mean you need to take supplements.  It is best to get your vitamins and mineral from food sources if you can.  Large doses of vitamins and minerals have not been shown to boost the immune system in well-nourished people or be beneficial for other reasons, and could cause harm. A once a day multivitamin and mineral supplement may be needed if you are not able to eat a variety of foods or if your diet has changed.  If you have questions about taking single nutrient supplements (ex. Calcium, Iron, vitamin D) talk to your health care team.


Can I take supplements during cancer treatment?

It is not recommended to take large amounts of antioxidants, including Vitamin A, C, E and selenium, in supplement forms during cancer treatment.  Many (but not all) chemotherapy drugs and radiation work by causing oxidative stress to kill cancer cells. Taking antioxidant supplements can counteract this. The amount found in foods, such as fruits and vegetables, and a once-a-day multivitamin and mineral supplement is safe during cancer treatment.  If you decide to take large doses of antioxidants, or other vitamins or minerals during treatment, speak to your health care team.  

Are herbal products safe?

Herbal products or Natural Health Products include vitamin/minerals, herbs and other products that come in many forms such as teas, powders, tablets and liquid extracts.  They are often thought to be safe because they are labeled as "natural".  This is not necessarily true.  Even though plants are natural, they are not always safe and their effect is not always known.   Many of these products can increase risk of drug interactions, cause less cancer cells to be destroyed by treatment and affect test results. If you would like to use herbal products during your cancer treatment, please discuss the safest way to do this with your health care team. 

Growth hormones are not approved for use in Canada in chickens or pigs or added to their feed. However, hormones may be used in beef cattle. One of the growth hormones used is a form of estrogen that occurs naturally in animals and humans. Any residues of these hormones in meat are very small
when compared to the amount of estrogen a woman produces daily. Residues are thought to be stored in fat – you can lower your intake of these residues
by choosing leaner cuts of meat, trimming visible fat or choosing other foods from the Meat and Alternatives group of Canada’s Food Guide.


Yes, red meat in moderation can be part of a healthy diet.  Red meat includes beef, pork, goat, and lamb. These foods provide many nutrients including iron, protein, vitamin B12, and zinc. See the handout The Importance of Eating Protein during treatment and recovery for more about this nutrient.

It is recommended to limit red meat in your diet to 500 grams (18 ounces) cooked or less per week.  Eating processed meat and too much red meat can increase the risk of colorectal cancer. In addition, processed meats also increase the risk for cancer of the stomach.

Processed meat is often made from red meat, but poultry, or other meats that have been commercially preserved by smoking, curing, or with additives like nitrates are also considered processed meat.  Examples of processed meats include ham, bacon, sausage, salami, hot dogs, pepperoni, many deli meats, and bologna. Products that are preserved with naturally-occurring nitrites such as celery extract are still considered processed meats and may also increase risk of cancer.

If you choose to eat processed meat, eat it in small amounts and less often, like ham at a holiday dinner or a hot dog at a hockey game.

The Canadian Cancer Society has more information about red and processed meat and cancer prevention on their website.


Receiving cancer treatment does not necessarily mean you need to avoid any foods.  Foods to include and avoid during cancer treatment is different for each person.  It is based on your type of cancer, the treatment you are receiving, and any symptoms or side effects you have that may be making it hard to meet your nutrition needs. 

In general, cancer treatments can lower your immune system's ability to protect itself from infection.  At this time, it is important to practice good food safety guidelines. Most importantly, wash hands often with warm soapy water before and after preparing foods and before eating. Make sure that food is well-cooked and that you avoid raw and undercooked eggs, meat, fish, poultry and seafood. This will decrease your exposure to bacteria that could cause food borne illness. Read more about food safety for people with weakened immune system.

It is also recommended that you limit your intake of red meat, avoid processed meats, limit salty foods, and limit alcohol to two drinks per day for men and one drink per day for women.   See common question "Is it ok to eat red meat?" for more information about red meat and processed meats.

To learn more about what to eat after a cancer diagnosis:


You may have heard about particular foods such as plant-based foods (fruits, vegetables, whole-grains and legumes) as “foods that fight cancer”.  This is largely based on evidence for diet recommendations to prevent cancer.  The research on foods to prevent cancer growth and recurrence is less clear.
If your weight is stable, within a healthy range and you don’t have any problems with eating, it is suggested you follow Canada’s Food Guide.
If you are underweight, have unintentional weight loss and/or have problems eating enough, you may need to choose foods that are higher in calories and protein. Depending on symptoms from your cancer or its treatment you may need to eat softer foods or foods lower in fiber. 
Ask your health care team about your individual nutritional needs.


After diagnosis, some people consider following a vegetarian diet. The addition of more plant foods to the diet is a healthy choice whether or not you choose to follow a vegetarian diet. Vegetarian diets are defined by the types of foods that are included. Some vegetarian diets include milk and/or eggs. If you decide to eat a vegetarian diet that includes milk products, the only nutrient that needs special attention is iron. To improve the absorption of iron eat plant sources of iron together with foods that contain Vitamin C.

You may not get enough protein when following a “vegan” diet or a vegetarian diet because it excludes or limits animal products such as meat, eggs and milk. To get enough protein with this diet you need two servings daily from the Meat and Alternatives group listed in Canada's Food Guide


A low fibre diet may be recommended if you are experiencing diarrhea or if you are at risk of a bowel blockage (obstruction).  If you have diarrhea a low fibre diet can help reduce your symptoms and improve your quality of life.  If you are at risk of bowel blockage it is important to follow a low fibre diet to lower your risk of developing a blockage.  

When following a low fibre diet you are still able to eat a variety of foods including vegetables and fruit that are low in fibre.  See our Nutrition Handouts page for more information about a low fibre diet.  Ask to speak with a dietitian at your cancer centre or dial 8-1-1 to speak to a dietitian at HealthLink BC to make sure you are meeting all of your nutritional needs when following a low fibre diet.

More information

For practical food ideas and information, see our Nutrition Handouts.

Eating Well When you Have Cancer: Booklet by the Canadian Cancer Society

Nourish Magazine : Offers information relating to nutrition and cancer including advice from registered dietitians and recipes from a wellness chef.

The ELLICSR Kitchen Program is designed to support people affected by cancer. They offer recipes and video cooking demos

Cook for Your Life teaches healthy cooking to people touched by cancer.  Search for recipes based on your side effects, diet requirements and food preferences.

American Institute for Cancer Research (AICR) provides information on how to reduce your cancer risk. 

HEAL Well: A Cancer Nutrition Guide provides information about nutrition and cancer including common questions, and suggestions for dealing with cancer or cancer treatment related symptoms.  

Explore Meal Planning and Nutrition Videos by the Dana Farber Cancer Institute for information about making healthy food choices during and after cancer treatment.  You can also download their mobile app Ask the Nutritionist (Android, iPhone)

About Herbs was developed at Memorial Sloan Kettering Cancer Centre.  It provides information about herbs, supplements, and more.  You can also download their mobile app

Food safety for people with a weakened immune system

French version


Dietitians of Canada: Explore this website for general nutrition information.  Dietitians of Canada has also developed three mobile apps:

  • Cookspiration: Inspires you to cook any time, day or night.
  • EaTracker: Track your food and acitivity choices, analyze your recipes and plan your meals. 
Unlock Food is a bilingual award-winning website with lots of helpful food ideas. 

Canada's Food Guide: First Nations, Inuit and Metis: Available in English, Inuktitut, Ojibwe, Plains Cree, and Woods Cree.


Recipes from BC Cancer Nutrition:

Cookbooks Available from BC Cancer library (search catalogue for additional resources):

The Essential Nutrition Guide and Cookbook by Jean LaMantia, RD and Dr. Neil Berinstein, MD, FRCP(C), ABIM.


Goes Down Easy: recipes to help you cope with the challenge of eating during cancer treatment by Elise Mecklinger, 2006.  


These free ebooks are available online. Some recommendations from the UK may differ slightly from Canada's: 


Good Nutrition For Cancer Recovery by Dr. Aoife Ryan PhD RD, Ms. Eadaoin Ni Bhuachalla BSc RD, Dr. Derek Power MRCPI, and Ms. Ann O'Connor BA MA. 

Eating Well With Swallowing Difficulties: Nourishing texture-modified recipes for those with Upper Gastrointestinal Cancer by Dr. Aoife Ryan PhD RD, Ms. Fiona Dwyer BSc, Ms. Jane Healy Bsc MA, and Dr. Derek Power MRCPI. 


Nourishing Your Body During Pancreatic Cancer Treatment by Dr. Aoife Ryan PhD RD, Ms. Eadaoin Ni Bhuachalla BSc RD, Ms. Jane Healy Bsc MA, and Dr. Derek Power MRCPI.  

Cooking. Comfort. Care. Nourishment for the Pancreatic Cancer Fight

Library services


Library catalogue

Recommended websites


Pathfinder: Nutrition for people with cancer.  This is a list of recommended resources about nutrition for people with cancer compiled by the BC Cancer Library.


Healthlink BC: A source for trusted health and nutrition information.  You can search their website or call 8-1-1 anywhere in BC, Monday to Friday 9am to 5pm to speak to a registered dietitian.  




Canadian Cancer Society website has information about all types of cancer, cancer treatment and side effects, coping with cancer and cancer prevention.

BC Cancer videos and presentations

Cancer Related Appetite and Weight Loss: Video by Julie Tanguay-Gordon, registered dietitian at the Ottawa hospital cancer centre.

Cancer Related Nausea and Vomiting: Video by Sonia Marcil, registered dietitian at the Ottawa hospital cancer centre. 

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