Madeleine Hull
A dog's diet can have a significant impact on their quality of life and longevity when they have cancer. Cancer causes complex biological changes in dogs, requiring a delicate nutritional balance. While there is no one-size-fits-all diet for dogs with cancer, certain dietary adjustments can support their health. For instance, cancer cells feed on glucose from carbohydrates, so reducing carbs can be beneficial. Additionally, protein becomes even more crucial for dogs with cancer, as cancerous tumours feed on the body's protein, leading to muscle loss. Including lean proteins, cruciferous vegetables, and certain fruits like blueberries and blackberries, which are rich in antioxidants, can be beneficial. It is important to consult with a veterinarian or a veterinary nutritionist to determine the best diet for a dog with cancer, as their nutritional needs may vary.
| Characteristics | Values |
|---|---|
| Purpose | To improve quality and length of life |
| Who to consult | Veterinary nutritionist, veterinarian, oncologist or animal nutrition specialist |
| Diet type | No one-size-fits-all, but generally high protein, moderate fat, low carbohydrate |
| Protein | Critical to maintain lean body mass |
| Carbohydrates | Cancer cells use glucose from carbs as an energy source, so limit carbs |
| Vegetables | Cruciferous vegetables like cauliflower and turnips have cancer-fighting properties |
| Fruits | Apples, sweet potatoes, beets, blueberries, blackberries, pomegranates |
| Supplements | Probiotics, vitamin B complex, amino acids, iron, omega-3 fatty acids, fish oil |
| Commercial diets | Recommended after a cancer diagnosis, but avoid those with corn/corn meal, wheat or another flour as the first ingredient |
| Home-prepared diets | Should be nutritionally balanced, with the right vitamins and minerals |
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What You'll Learn
Cancer treatment and digestive issues
Cancer treatment for dogs can vary depending on the type, location, and severity of the cancer. Surgery is often the first course of treatment for removing tumors, especially in the case of stomach cancer. However, surgery can be complicated and is not always an option. In such cases, chemotherapy or radiation therapy may be recommended. Chemotherapy drugs can interfere with some supplements, so it is important to consult a veterinarian or oncologist before giving your dog any supplements. Additionally, some chemotherapy drugs can cause gastrointestinal issues, so it is crucial to be cautious.
Radiation therapy is a painless procedure performed under sedation to prevent the dog from moving. Common side effects may include fatigue, skin issues, and discomfort in the affected area. The number of treatments and frequency of radiation therapy can vary depending on the cancer's type and severity.
For intestinal cancer, specifically adenocarcinoma, surgery is also the most common treatment. However, full recovery depends on the complete removal of the tumor, which can be challenging. Chemotherapy may be recommended as an alternative if the tumor has metastasized or spread to other parts of the body. Non-steroidal anti-inflammatory drugs (NSAIDs) may also be prescribed to reduce inflammation.
It is important to note that cancer treatment for dogs can vary depending on the individual case, and a veterinarian will determine the best course of action. Early detection and treatment are critical, so if you notice any unusual symptoms in your dog, consult your veterinarian as soon as possible.
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Cruciferous vegetables and cancer-fighting properties
While there is no one-size-fits-all recipe for the perfect dog cancer diet, there are some steps you can take to give your dog a nutritional boost. It is important to consult a vet before making any changes to your dog's diet. A dog with cancer needs a complete and balanced diet, with higher protein, moderate fat, and low carbohydrate.
Cruciferous vegetables, named for their four-petal flowers resembling a cross, are known for their many health benefits, including their cancer-fighting properties. They are rich in nutrients, including carotenoids (beta-carotene, lutein, zeaxanthin), vitamins C, E, and K, folate, and minerals. They are also a good source of fiber. Broccoli, Brussels sprouts, cabbage, cauliflower, turnips, and dark leafy greens like kale and collard greens are all cruciferous vegetables.
The cancer-fighting properties of cruciferous vegetables are attributed to compounds called glucosinolates, which are found in all cruciferous vegetables. Upon ingestion, glucosinolates break down to form biologically active compounds such as isothiocyanates and indoles, which are associated with decreased inflammation and lower cancer risk. Traditional population-based studies have found strong links between greater consumption of cruciferous vegetables and lowered risk of lung, colorectal, stomach, breast, and prostate cancers. However, human studies are inconsistent in showing this link, which may be due to genetic differences in how the body processes these compounds.
To get the most cancer-fighting benefits from cruciferous vegetables, try incorporating a variety of them into your dog's diet and experiment with new preparation techniques. Steam, microwave, stir-fry, or sauté them to retain their nutrients. Boiling greens can cut the content of these compounds in half, so it is recommended to cook them just until they are tender/crisp, with the greens still bright to avoid bad odors.
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The importance of protein in a dog's diet
A dog diagnosed with cancer goes through complex biological changes that require a delicate nutritional balance. While there is no one-size-fits-all recipe for the perfect dog cancer diet, it is important to feed them a quality, nutritionally balanced diet that provides enough calories.
Protein is one of the most important parts of a dog's diet, and it becomes even more important when the dog has been diagnosed with cancer. Cancerous tumours feed off the protein that the dog's body produces naturally, which is found in their muscles. Therefore, it is critical to feed a dog with cancer more protein to enable them to fight off the growth of cancerous cells. The current recommendation for canine cancer patients is a protein level of 30-40% DM.
Protein helps a dog stay strong and healthy, as it feeds directly into their muscles and keeps them physically fit. It also powers their immune system, protecting them from other ailments. Lean proteins are a great addition to a dog's cancer-fighting diet.
It is important to note that cancer can cause a decrease in appetite, which can lead to weight loss. This weight loss includes not only excess body fat but also the loss of needed lean muscle mass, which is called cancer cachexia. As such, it is recommended to feed dogs with cancer cuts with fat rather than lean cuts.
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Commercial vs. homemade diets
While there is no one-size-fits-all recipe for the perfect dog cancer diet, a well-balanced diet can boost your dog's strength and energy, enhance their overall well-being, speed up recovery, and help them better tolerate treatment and its side effects. The best diet for any particular dog can vary, and it's important to consult a veterinarian or a board-certified veterinary nutritional specialist to determine the best course of action.
Commercial diets prepared by reputable manufacturers have the advantage of being tested in feeding trials and passing AAFCO standards, ensuring they meet the nutritional requirements for adult dogs. They also tend to be nutritionally complete and balanced, containing the right macronutrients (carbohydrates, fats, and proteins) and micronutrients (vitamins and minerals). For example, the commercial diet Hills Prescription Diet ONC Care includes highly digestible proteins and high levels of essential amino acids, along with prebiotics to support the microbiome and digestive issues that can occur with cancer and its treatment. Newer commercial options are also often minimally processed, avoiding the issues of high heat processing, such as dehydrated foods.
However, some commercial diets may contain potentially damaging by-products, such as antibiotic residues, mycotoxins, and storage mites, and some ingredients may come from poor-quality food supplies. Commercial diets may also not be tailored to the specific needs of your dog and their type of cancer.
Homemade diets offer flexibility and total control over what goes into your dog's body, allowing you to use fresh, whole food ingredients, which may be more palatable to your dog. They can also be tailored to the specific needs of your dog and their type of cancer, such as a low-carb, high-protein, and high-fat diet. For example, a homemade diet can include ingredients such as fish, which is a great source of omega-3 fatty acids and vitamin D3, known to limit inflammation and potentially slow the growth of cancerous tumors. Other ingredients such as blueberries, blackberries, and broccoli can provide antioxidants, while apples have antiangiogenic properties that can help prevent the development of tumors. However, homemade diets can be a lot of work, and it is important to ensure they are properly balanced to meet all the nutritional requirements of your dog, including important vitamins and minerals.
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Carbohydrates and cancer cells
Carbohydrates are a source of glucose, which provides an immediately available energy source for all cells in the body. However, cancer cells metabolize glucose differently from healthy cells, through a process called anaerobic glycolysis, which results in the excess production of lactate. This creates an environment that is conducive to cancer growth and makes it more challenging for the immune system to fight the cancer.
Cancer cells have a preference for glucose from carbohydrates as their energy source, and they feast on it, as described by Dr. Carol Osborne, DVM. By limiting carbohydrates in a dog's diet, you can reduce the fuel available to cancer cells and potentially help the dog's body combat the disease. This approach is often referred to as "starving the cancer cells," but it's important to note that they won't be completely deprived of nourishment if you reduce carbohydrates. Instead, their fuel source will be diminished, making it easier for the dog's body to fight the cancer.
It is worth noting that while carbohydrates should be limited, they are not the sole culprit in a dog's diet that contributes to cancer. Cancer is a complex disease influenced by various factors, including genetics, environmental elements, and toxins. Commercial diets, processing, high heat, and chemical preservatives in dog food may also play a role. Therefore, a balanced approach to nutrition is crucial.
When it comes to carbohydrates and cancer cells in dogs, the main goal is to restrict the fuel source for cancer cells without depriving healthy cells of necessary energy. This can be achieved by reducing carbohydrates in the dog's diet, but it's important to note that completely eliminating carbohydrates is not advisable. Instead, focus on providing carbohydrates from healthy sources, such as vegetables and fruits, which also offer fiber and phytonutrients that can be beneficial.
Additionally, it's important to consult with a veterinarian, oncologist, or animal nutrition specialist before making any dietary changes for a dog with cancer. They can provide personalized advice and ensure that the dog receives a complete and balanced diet tailored to their specific needs, considering their overall health, the type and stage of cancer, and any other medical conditions.
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Frequently asked questions
A cancer diet for dogs is a nutritional plan designed to support a dog's quality of life and longevity during cancer treatment. It typically involves a balanced, complete, and nutritious diet that may be homemade or commercially prepared.
A dog's cancer diet should be high in protein, moderate in fat, and low in carbohydrates. Cruciferous vegetables, such as cauliflower and turnips, are recommended for their cancer-fighting properties. Lean proteins, mushrooms, sardines, and berries are also beneficial. Apples, sweet potatoes, and beets are nutritious additions that may help prevent cancer and boost overall health.
Excess starchy carbohydrates, corn, and vegetable oils should be avoided, as cancer cells use glucose from carbohydrates as an energy source. Grilled and broiled foods may also be unsuitable due to potential carcinogenic compounds formed during high-heat cooking.
Yes, it is strongly advised to consult a veterinarian, oncologist, or animal nutrition specialist when creating a cancer diet for your dog. They can help determine the best nutritional approach for your dog's specific needs and ensure a balanced diet is maintained.
