Dangers of Krill Oil for Dogs with Cancer




Recently, there has been a lot of discussion about giving krill oil to dogs with cancer.  Let’s take a closer look. Facts reveal that giving krill oil to any dog with cancer could be dangerous and make the cancer worse.

Krill are tiny shrimp known as crustaceans or shellfish. They are a rich source of omega 3 fatty acids and the antioxidant, astaxanthin. Persistently high cancer rates in the European Union are thought to be the result of shellfish consumption, specifically shellfish incorporating diarrhetic shellfish poisoning toxins such as okadaic acid. A 2009 report from 73,224-participants in the Shanghai Women’s Health Study also found high shellfish consumption to be associated with increased risk of colorectal cancer.


Krill live next to icebergs and feast on algae and plankton. After they eat the plankton, they fill with feces. The extra weight of their feces causes them to dive to consume more plankton. Larger crustaceans such as shrimp contain an allergy causing protein called tropomyosin. This is the protein that triggers allergies. However the amount of tropomyosin in large shellfish such as shrimp is much less than the amount found in krill. As such, krill trigger far more allergic reactions than other shellfish. A dog with cancer has a weakened immune system, and no matter how rare, an allergic reaction such as this can cause more severe reactions in a dog with cancer than in a healthy dog.

Even if your dog is not allergic to tropomyosin, krill contain high amounts of flouride in their shell. Flouride is a toxic carcinogen. Because they are so tiny, shells from krill must be mechanically removed. No matter how much a manufacturer tells you that toxins have been removed, it is impossible to remove all of these tiny bits of shell. The first long term effects of this fluoride-containing shell is brown mottling of the teeth. Even worse, flouride is a cancer causing, tumor proliferating substance.

Dr. William Marcus, Senior scientist at the Office of Drinking Water, won over $250,000 from a whistle blower’s law suit against the Environmental Protection Agency over the fluoride cancer connection. He was fired in 1990 for telling the truth about fluoride and calling for an independent review board. “In point of fact, flourine causes more cancer death, and causes it faster than any other chemical.” (Dean Burk, Ph.D. former head of the National Cancer Institute’s cytochemistry section chief chemist emeritus at the U.S. National Institute.)

It is important for dogs with cancer to get enough essential fatty acids know as EPA and DHA. It is true that these fatty acids are easier to absorb with krill oil, however you must take a lot more krill oil to absorb the same amount of essential fatty acids than with fish oil.

Krill oil is filled with ocean pollutants and toxins such as mercury and other heavy metals. Despite what manufacturers tell you, krill oil is not free of these pollutants.

There have been thousands of studies of the benefits of fatty acids from fish oil, but few about the risks and benefits of krill oil. Krill oil is potentially dangerous and could possibly proliferate cancer. High quality fish oil is molecularly distilled and independent laboratory tests show it to be free of toxins that are found in krill oil. Krill oil costs much more than fish oil. About five times more.

If your dog has cancer you need to avoid adding additional toxins to their diet at all costs. Krill oil does not meet this criteria. It also does not mix well with other supplements such as CoQ10. Fish oil mixes well with these other supplements providing better absorption.

If your dog has cancer I strongly suggest that you remove any cancer causing chemicals from their diet. Krill oil contains cancer causing chemicals. High quality fish oil does not. In addition, fish oil provides more essential fatty acids which are beneficial in fighting cancer than krill oil does. 

I recommend avoiding krill oil if your dog has cancer at all costs as it proliferates the growth of cancer cells. More research needs to be done on krill oil. This research has already been done on fish oil proving it does not accelerate cancer and is not toxic. Do not feed your dog with cancer krill oil if you want to give them the best chance for survival!

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About The Author

Dr. Steven Eisen

As a passionate dog lover and pet health advocate, Dr. Steven Eisen teaches others how to improve the health, quality, and longevity of their pet's lives. His holistic perspective raises awareness of how the "status quo", relied upon by millions of pet owners can actually cause sickness and disease. Since receiving his Doctor of Chiropractic degree in 1982, Dr. Eisen has been retained as an expert and consultant by attorneys, professional heath organizations, governmental institutions, and renowned authorities in the fields of holistic and alternative medicine. His best selling book, Dog Cancer: The Holistic Answer, has helped thousands of dogs live longer lives with a unique, non-toxic approach to healing canine cancer, with information not available in any other single source. Dr. Eisen is also the founder of Dog Cancer Academy.

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