Cancer is a leading cause of death in pets, with over 12 million dogs and cats diagnosed every year. Pet Cancer Awareness Month is a reminder of how crucial it is to protect our furry friends from this devastating disease and to support them if they face a diagnosis. While cancer can be difficult to prevent entirely, research suggests that a low-carbohydrate diet may play a significant role in both reducing cancer risks and helping to slow the spread of cancer cells in pets already diagnosed.

In this guide, we’ll discuss the warning signs of cancer in pets, possible causes, cancer-fighting whole foods, and how a raw, low-carb diet can be an effective approach for pets at risk of or living with cancer.

Recognizing the Signs and Symptoms of Cancer in Pets

Early detection is essential in managing cancer effectively. Knowing the warning signs can help pet owners act quickly and get their pets the care they need. 

Common symptoms of cancer in pets include: 

  • Lumps or Bumps: Unexplained growths that change in size, shape, or texture over time.
  • Loss of Appetite and Weight Loss: A sudden drop in weight or decreased interest in food.
  • Lethargy and Reduced Activity: Pets with cancer may appear tired, weak, or less interested in play.
  • Difficulty Breathing or Swallowing: Tumors in the throat or chest area can cause respiratory issues.
  • Unusual Odors or Bleeding: Persistent odors or unexplained bleeding from the nose, mouth, or other orifices.

If you notice any of these signs in your dog or cat, consult your veterinarian promptly to determine the underlying cause and discuss possible treatments. 

Possible Causes of Cancer in Pets

Cancer in pets, much like in humans, can have multiple contributing factors. While some causes are unavoidable, others are related to diet and environmental factors. 

Common contributors to cancer in pets include: 

  • Genetic Predisposition: Certain breeds are more likely to develop specific cancers.
  • Environmental Toxins: Exposure to pesticides, pollutants, and second-hand smoke can increase cancer risk.
  • High-Carbohydrate Diets: Diets high in carbohydrates, which convert to glucose, may fuel cancer cells. Cancer cells thrive on glucose, making a high-carb diet problematic for pets with or at risk for cancer.
  • Obesity and Inactivity: Obesity is linked to a higher risk of various health issues, including cancer. Regular exercise and a healthy weight can lower these risks.

Understanding these factors can help pet owners make informed decisions that support long-term health. 

Whole Foods That Help Prevent Cancer in Pets

A diet rich in specific whole foods has shown promise in cancer prevention. Certain foods contain compounds that are known to help fight inflammation, boost immunity, and support cellular health—all important in preventing cancer. 

Here are some nutrient-dense foods that can be beneficial for pets: 

  • Broccoli: Broccoli is a powerful superfood for pets, as it contains sulforaphanes, compounds that have shown antitumor and anticancer activity. Dr. Karen Becker highlights that sulforaphanes in broccoli stimulate apoptosis, which promotes the healthy death of cancerous cells in the body. Broccoli also contains DIM, a molecule with anticancer properties, making it an ideal addition to a cancer-preventive diet. Be sure to serve broccoli fresh, as the sulforaphane benefits are only available in its whole form.
  • Blueberries: These berries are rich in antioxidants and vitamins that combat oxidative stress, reducing the risk of cellular damage and supporting immune health.
  • Turmeric: Known for its anti-inflammatory effects, turmeric contains curcumin, which has been studied for its potential to inhibit cancer cell growth.
  • Leafy Greens: Spinach, kale, and other leafy greens are packed with fiber, vitamins, and minerals that support healthy cell function and may prevent inflammation.
  • Mushrooms (e.g., Shiitake, Reishi): Certain mushrooms contain beta-glucans, compounds that boost the immune system and have been studied for their cancer-preventive properties.

Including these foods in your pet’s diet may help boost their immune system, reduce inflammation, and support healthy cell function, providing a strong foundation against cancer. 

The Benefits of a Raw, Low-Carbohydrate Diet for Cancer Prevention and Management

Many pet owners are exploring raw diets for their dogs and cats, especially when they’re looking to prevent or manage cancer. A low-carbohydrate raw diet aligns with the goal of “feeding the pet, not the cancer,” as it prioritizes protein, healthy fats, and whole foods rather than carbs that fuel cancer cells. 

Benefits of a Raw, Low-Carb Diet:

  • Reduced Glucose Supply: Cancer cells feed on glucose, so minimizing carbs limits their primary energy source, which can help slow cancer growth.
  • High-Quality Proteins and Fats: A raw diet focuses on nutrient-dense meats, healthy fats, and low-starch vegetables. This ensures that your pet receives essential amino acids and fatty acids necessary for immune function and energy without the added sugars.
  • Improved Digestibility and Nutrient Absorption: Raw diets provide nutrients in their natural form, which can be easier for pets to digest and absorb. This is particularly beneficial for pets with compromised immune systems.
  • Enhanced Immunity and Cell Health: Raw foods are often rich in antioxidants and vitamins that support immune health, helping the body fight off free radicals and prevent cancer cell development.

A Word on Raw Feeding for Cancer

For pets who have been diagnosed with cancer or are predisposed to it, a carefully balanced raw diet can be a wonderful choice. Talk to your veterinarian or a pet nutrition specialist to develop a diet plan that suits your pet’s unique needs, and focus on incorporating low-carb, high-protein, and nutrient-dense ingredients. 

Takeaway: Supporting Your Pet’s Health Through Diet

Choosing a low-carbohydrate, nutrient-rich diet may be one of the most beneficial decisions you can make for your pet’s health. From cancer prevention to supporting those pets already diagnosed, a diet low in carbs and high in wholesome, fresh foods can give your pet the best possible foundation for a healthy life. 

Consider incorporating whole foods like broccoli, blueberries, and leafy greens into your pet’s diet for added health benefits. And if you’re thinking about a raw food diet, remember that low-carb options may provide your pet with the necessary nutrients while reducing cancer risks. By making dietary adjustments and focusing on preventative care, you’re giving your pet the best possible chance for a vibrant, healthy life.