Diet and cancer

Can diet affect cancer?

Yes, diet can affect the risk of developing certain types of cancer and can also influence how the body responds to cancer treatment. A healthy, varied diet rich in fruit, vegetables, and whole grains can reduce the risk of many cancer types.

In addition, there are diets believed to directly starve cancer (without starving yourself). So in short: yes, your diet can affect your cancer risk.

Which foods should I avoid when I have cancer?

Foods that may be good to limit:

– Processed meat: sausages, bacon, cold cuts, etc. often contain a lot of salt, preservatives, and saturated fat.

– Red meat: beef, veal, lamb, and pork contain more saturated fat than poultry and fish.

– Salt: a high salt intake increases the risk of stomach cancer.

– Alcohol: increases the risk of various cancer types.

– Sugar: increased risk of several cancer types.

Under the menu Treatments/Nutrition-Diet you can read about different diets

How can I strengthen my immune system?

To strengthen your immune system, you can:

– Eat healthy and varied: plenty of fruit, vegetables, whole grains, and lean proteins.

– Move regularly: exercise strengthens both the body and the immune system.

– Get enough sleep: during sleep, the body repairs itself.

– Avoid stress: chronic stress can weaken the immune system.

– Wash your hands: good hygiene protects against infections.

Under the menu Life with cancer, you can read more about both Sleep and Exercise.

Which exercises are good for cancer patients?

Good exercises for cancer patients:

– Light walks: a gentle way to get started.

– Strength training: to build muscle mass and strength.

– Yoga and tai chi: to increase flexibility and reduce stress.

Under the menu Life with cancer, you can read about Exercise and Movement with Limitations.

IInflammation and diet – is there a connection?

Yes, there is a strong connection between inflammation and diet. An anti-inflammatory diet rich in fruit, vegetables, whole grains, and healthy fats can reduce inflammation in the body. Conversely, a diet high in processed foods, sugar, and unhealthy fats can increase inflammation. Read more about inflammation here

Diet and nutrition as a strategy in cancer treatment – Introduction

Although we know that a healthy diet is crucial for our health (the Danish Health Authority’s dietary guidelines), there is often a tendency to downplay the importance of diet for cancer patients. So isn’t there a diet that’s good for a cancer patient? Read on further down.

Can it really be true

Many cancer patients are told that the most important thing is to avoid weight loss, and that what they eat doesn’t matter. But is that really true?

When the body is fighting cancer, it needs all the support it can get. A healthy, varied diet can strengthen the immune system and help the body fight the cancer. Everything we consume necessarily becomes part of a biochemical process in the body. The molecules available must therefore, logically, be crucial to the outcome.

You can only wonder why nutrition doesn’t receive more focus in cancer treatment. We should all, as best we can, ensure the body gets the best possible support—also through diet.

See also suggestions for dishes for the diet that starves cancer

Contents:

Introduction (scroll to)
- General information about nutrition and diet in cancer
Plant-based dietary approaches (scroll to)
- Vegetarian diet
- Vegan diet
- Raw food
- Mediterranean diet
- Plant-based diet
- Paleo diet
- TCM and Yin-Yang diet
- Ayurvedic diet
Restrictive dietary approaches (scroll to)
- Ketogenic diet and LCHF
- Fasting
- Alkaline diet
- Carnivore diet – meat-only diet
- GAPS diet
- Gerson diet
- The Budwig protocol
Personalised nutrition (scroll to)
- Personalised diet
- The microbiome and diet
- Diet for specific cancer types
Diet against cancer (scroll to)
- Anti-inflammatory diet
- Autoimmune – Strange Skov
- Chris beats cancer
- Diet that starves cancer
- Sugar and cancer
- Reduced appetite

1. Introduction:

General nutrition for cancer patients

Energy for cancer treatment

Cancer—and at least conventional cancer treatment—can be very demanding on the body, so it’s important to get enough energy through your diet.

Stronger immune system

A healthy diet can help strengthen the immune system so the body can better fight the cancer.

Reduced risk of complications

Good nutrition can reduce the risk of infections and other complications.

Improved quality of life

A healthy diet can help improve appetite, reduce fatigue, and increase wellbeing.

Nutritional challenges

Changed sense of taste

Many people experience changes in their taste buds during cancer treatment, which can make food less appealing.

Gastrointestinal problems

Cancer treatment can lead to nausea, vomiting, diarrhoea, or constipation.

Mouth sores

Mouth sores, as a result of cancer treatment or the disease itself, can make eating painful. This will often reduce saliva production, which further worsens the situation.

Fatigue

Fatigue, due to the cancer or the treatment, can reduce the desire to eat.

Weight loss

Many cancer patients experience unintentional weight loss.

Weight gain

Weight gain is most common during and after treatment, especially if corticosteroids are used. These can lead to fluid retention (oedema) and increased appetite.

In addition, certain types of pain medication can contribute to weight gain.

Finally, cancer and its treatment can lead to inactivity due to fatigue and reduced function, which increases the risk of weight gain.

If possible, this is good to counteract—unless you are already underweight.

On both of the above pages, you can find suggested solutions to the problems mentioned in this section.

Basic dietary advice

Eat a varied diet

A varied diet ensures you get all the necessary nutrients.

Prioritise protein

Protein is important for building and repairing tissue. Good sources of protein include meat, fish, eggs, beans, lentils, nuts, and dairy products. However, it should be noted that some believe you should be cautious with meat from four-legged animals as well as dairy products once you have a cancer diagnosis. This also applies to refined sugar—see item 14) Cancer Metabolism and Nutrition at the bottom of this page).

Eat regularly

Eat small meals several times a day instead of a few large meals.

Drink plenty

Make sure you drink enough fluids, especially if you have diarrhoea or vomiting.

Adapt your diet to your appetite

If you have reduced appetite, try eating small, energy-dense meals.

Consider supplements

Talk to a qualified adviser about whether you need dietary supplements.

Don’t expect advice from the oncologist

There is no general standard diet for cancer patients. And diet is something only a few conventional cancer specialists take an interest in.

You may even be told that it doesn’t matter what you eat. But read this and decide for yourself whether it might matter after all. Some diets may be beneficial for certain types of cancer, but it’s a good idea to talk to a qualified adviser or dietitian before changing your diet drastically.

Dietitian

A dietitian can create an individual meal plan that fits your needs and preferences.

Nutrition adviser

Your doctor can advise you on nutrition and refer you to a dietitian.

Avoid diets that promise miracle cures

There is no scientific evidence that special diets can cure cancer. But many people have experienced particularly remarkable improvement based on the diet they chose to focus on as part of their cancer treatment.

Note

Nutrition is therefore an important part of cancer treatment, but it’s also important to enjoy your food and find joy in eating.

It should be emphasised that there is no one-size-fits-all diet for cancer patients. Any dietary change should also always be discussed with a qualified adviser or dietitian.

Other considerations

Weight changes

Unintentional weight loss (and more rarely weight gain) is common in cancer patients. It’s important to work with a dietitian to find strategies to maintain a healthy weight.

Taste and appetite

Changes in taste buds and reduced appetite can make eating challenging. There are many tips and tricks to improve taste and appetite.

Oral hygiene

Good oral hygiene is important to prevent infections and make eating more comfortable.

Psychological aspects

Food can have great emotional significance. It’s important to find a balance between health and enjoyment.

Remember

Individual needs

Every cancer patient is unique, and what works for one person doesn’t necessarily work for another.

A good diet for a cancer patient is a diet that you also feel is right for you. It is my personal belief that the mind outweighs the body.

Focus on wellbeing

In addition to nutrition, it’s important to focus on sleep, stress reduction, and physical activity to maintain a good quality of life.

See also suggestions for dishes for item 15 Diet that starves cancer

2. Plant-based dietary approaches in cancer

Vegetarian diet

(A flexible, nutrient-rich diet that can strengthen the body and improve quality of life. By avoiding meat and increasing intake of plant-based foods, the risk of certain cancers is reduced. Read more)

Vegan diet

(By choosing a vegan diet, you can optimise the body’s immune system and reduce inflammation, which is crucial for fighting cancer cells. Read more)

Raw food

(Raw food is about eating unprocessed, raw foods such as fruit, vegetables, nuts, and seeds—so as to preserve enzymes, vitamins, and nutrients. Read more)

Mediterranean diet

(A diet from the Mediterranean region that is partly plant-based, rich in olive oil, whole grains, and fish, and is known for its health benefits. Read more)

Plant-based diet

(A plant-based diet can, unlike a vegan diet, include small amounts of animal products such as milk, eggs, or honey, but the main emphasis is on plant foods. Read more)

Paleo diet – Stone Age diet

(Mimics the diet our ancestors ate and excludes processed foods, grains, legumes, and dairy products. Read more)

Yin-Yang and TCM diet

(Traditional Chinese Medicine (TCM) emphasises that food is not only nourishment but also medicine. The TCM diet is about creating balance in the body by eating foods that suit the individual constitution. Read more)

Ayurvedic diet

(An Indian medical system with a long tradition of using diet to maintain health and fight disease. Read more)

To be continued…

3. Restrictive dietary approaches in cancer

Ketogenic diet and Low Carb High Fat (LCHF)

(The keto diet and low carb high fat (LCHF) are essentially the same. Here, the focus is on low carbohydrate intake and high fat intake. This puts the body into a state called ketosis, where it primarily uses fat as an energy source instead of glucose. Read more)

Fasting

(Some theories suggest that fasting can strengthen the immune system, reduce inflammation, and make cancer cells more vulnerable to treatment. Review of different types of fasting. Read more)

Alkaline diet

(Focuses on foods that make the body less acidic. Consists primarily of fruit, vegetables, and certain nuts. This is said to improve health. Read more)

Carnivore diet – meat-only diet

(Here, the idea is to consume only animal products, among other things to help reduce inflammation. Read more)

The GAPS diet

((Gut and Psychology Syndrome) was developed to heal the gut and thereby improve a wide range of physical and psychological symptoms. Focuses on rebuilding a healthy gut flora and healing a damaged intestinal lining. Read more)

Gerson diet

(The Gerson diet places great emphasis on fresh, organic fruit and vegetables rich in vitamins, minerals, and antioxidants. This can contribute to a generally healthier lifestyle and strengthen the immune system. Read more)

Breuss cancer cure

(The cure aims to cleanse the body of toxins and waste products. This can give some people a sense of wellbeing. Read more)

The Budwig protocol

(A diet mainly consisting of a mixture of flaxseed oil and cottage cheese, rich in omega-3, aimed at restructuring cells to fight cancer. Read more)

Chris Beat Cancer

(A holistic approach to fighting cancer, focusing on the body’s self-healing through changes in diet, lifestyle, and spirituality. Read more)

The Low FODMAP diet

(Can be used as a tool for cancer patients to manage side effects such as diarrhoea, bloating, and abdominal pain from chemo and radiation therapy. Read more)

Wahls protocol

(A diet and lifestyle plan that forms a holistic strategy, primarily developed for people with MS. An approach that aims to strengthen the body’s health through diet, exercise, and stress management. Read more)

To be continued…

4. Personalised nutrition in cancer

Personalised diet

(Tumours have different nutritional requirements to grow and spread. By understanding these requirements through genetic analysis, you can develop diets that specifically starve the tumour. Read more)

Microbiome-based diet

(Gut bacteria can play a role in the development and treatment of cancer. A microbiome-based diet seeks to manipulate the gut flora to improve health. Read more)

Diet for specific cancer types

(Some cancers may require specific dietary restrictions. Reviewed here:. Nausea and vomiting (go to), Oral cancer (go to), Oesophageal cancer (go to), Gastrointestinal cancer (go to), Pancreatic cancer (go to), Liver cancer (go to), Blood cancer (go to), Hormone-sensitive cancer (go to) Read more)

To be continued…

Diet and cancer

Diet and nutrition as a strategy in cancer treatment – Introduction

Can it really be true

1. Introduction:

General nutrition for cancer patients

Energy for cancer treatment

Stronger immune system

Reduced risk of complications

Improved quality of life

Nutritional challenges

Changed sense of taste

Gastrointestinal problems

Mouth sores

Fatigue

Weight loss

Weight gain

Basic dietary advice

Don’t expect advice from the oncologist

Note

Other considerations

Remember

2. Plant-based dietary approaches in cancer

3. Restrictive dietary approaches in cancer

4. Personalised nutrition in cancer

5. Diet against cancer

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