Introducing a case report of a 20-year-old elderly cat with a brain tumor (invasive adenocarcinoma) that, without undergoing treatment with steroids or anticancer drugs, recovered its health and appetite by taking Cordyceps.

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Example of Using Cordyceps to Control the Progression of a Brain Tumor

About Brain Tumors

Just like humans, brain tumors are relatively common in dogs and cats. There are primary brain tumors and metastatic brain tumors, which are cancers from other organs that have spread to the brain.

Symptoms of brain tumors vary depending on the part of the brain where the tumor is located. Some may show no symptoms even after onset, while others may exhibit epileptic seizures, head tilt, circling, ataxia (loss of control of body movements), nystagmus (rapid involuntary eye movement), facial paralysis, and other symptoms.

Controlling Brain Tumors with Cordyceps

Cat, 20 years old (Tsukushi-kun, Male)
Diagnosis: Tumor in the forehead area, invasive adenocarcinoma

The photo on the left was taken when the cancer was diagnosed. The photo on the right was taken when Cordyceps was repurchased.
Initially, one can see that the area around the eye and nose is swollen due to the brain tumor.

One week after starting to take Cordyceps, a large amount of blood and pus oozed out, which surprised the mother, but Tsukushi-kun seemed to feel relieved. After that, the swelling quickly subsided. (The right side shows the face after the swelling went down.)

Photo taken at the time of cancer diagnosisPhoto taken at the time of Cordyceps repurchase

Report from the Mother (※Personal impressions)

After the earthquake, Tsukushi-kun was one of the last two out of 16 cats.

In January 2016, I started noticing a sense of discomfort on his face. Based on symptoms of our previous deceased cats, I felt it wasn’t a good sign.

Shortly after noticing the discomfort, his eyeball started to protrude, so I took him to the hospital for various tests. The tests took time, but the pathological examination eventually diagnosed a brain tumor.

The veterinarian told us, “The tumor is highly malignant, unresponsive to steroids or anticancer drugs. As it grows, the eyeball will protrude more, the nose will be compressed, leading to loss of smell, decreased appetite, weakness, and eventually death. If he appears to be suffering or in pain, euthanasia might be an option.”

I couldn’t give up, so I visited three animal hospitals, but all gave the same answer. The second opinion doctor also sent the pathological examination to Osaka Prefecture Medical University, but the result was the same.

Due to his advanced age of 20 years, treatment was not recommended.

While our family initially decided against chemotherapy or surgery due to past experiences, the actual cancer diagnosis left us unsure.

However, we concluded that his physical condition wouldn’t withstand chemotherapy or surgery. Thus, we decided to give Cordyceps, keep him warm, and pray for the best outcome.

About a week after starting Cordyceps, a large amount of pus and blood came out of his nose. I was surprised, but Tsukushi-kun didn’t seem weakened and had a relieved look on his face.

From that day on, his energy and appetite returned, and he started playing with the other cats.

For several months until the day before he passed away, he remained energetic and his appetite stayed robust. He eventually passed peacefully from old age.

When we cremated him, the bones were solid, unlike the brittle or dark bones typical of cancer-afflicted cats, making it hard to believe he was sick.

I felt happy that he could live normally right up until he passed away peacefully.


Left photo: Two weeks before death. Right photo: The day before he passed away.
He maintained his appetite until the end and played with the other cats.
” She passed away slowly and peacefully, surrounded by her family.
Two weeks before passingPicture from the day before passing
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Cordy: Gentle on the Body

In cases like this, where your beloved cat or dog is elderly or has physical limitations that prevent aggressive treatments, Cordy can be incorporated because it places no burden on the body. It often results in a peaceful daily life for your pet.

At our research lab, we are studying whether Cordy can help modulate the immune system and whether its effects on cancer can be expected.

If you have any questions, please contact us.

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