Natural Remedies for Cancer Prevention and Treatment

Are there any good natural remedies for cancer?


The comprehensive list below shows what people around the world have tried.

The detailed list represents supplements that may be helpful in preventing and treating all types of cancer. Some have good research studies backing their claims. Others do not.

Many types of cancer are the result of damage to the generic material, the DNA.

Research study revealed that inheritance did not play a major role in cancer risks while environmental factors were the major reason for the cause of many forms of cancer.

If you are thinking of taking natural supplements in an attempt to fight off cancer, it is also as essential to follow a healthy diet, high in fruits and vegetables.

Keep in mind that the treatment of cancer, including the use of natural remedies, must be supervised by a qualified health care professional.

Natural Remedies for Cancer Treatment and Prevention

Natural Remedies

What Experts Say...

Coriolus versicolor (Trametes versicolor)

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This herb is used in traditional Chinese Medicine along with conventional anticancer therapy.

Clinical studies seem to show that it can boost the effectiveness of conventional therapy. The active chemicals believed to be responsible for its cancer fighting effect are PSP (polysaccharopeptide) and PSK (polysaccharide-K).

Dose: Studies used 2 to 6 grams daily in additional to conventional anticancer therapy.

Vitamin D

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Population studies showed that a low level of vitamin D is linked to increased risk of developing cancer of the prostate glands and colon.

For men, taking high-dose vitamin D supplement has a 17% reduction in all types of cancer, 43% reduction in stomach and intestinal cancer and a 25% reduction in deaths due to cancer.

Dose: Take 1,000 IU daily.

Vitamin C

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Several population studies showed a link between low levels of vitamin C and increased risk of developing various forms of cancer (stomach, colon, mouth, lung and prostate cancer).

Although experts are not certain, lab studies show that cancerous cells absorb much more vitamin C than regular cells and this may be toxic to them.

Dose: 5,000 to 10,000 mg (5 to 10 grams) in divided doses have been suggested.

Caution: These high doses of vitamin C must be supervised by a health care professional that specializes in using mega-dose vitamin C therapy for cancer.

Intravenous vitamin C therapy is commonly used to deliver these high doses into the body.


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Many population studies showed that a low level of selenium is strongly linked to prostate, throat, stomach, lung, skin and colon cancer.

The best known benefit of taking selenium appeared to be for the prevention of prostate cancer.

Dose: Take 200 mcg daily. Higher dose many not provide any additional benefits.

See the Full Review on Selenium for more information.

Green Tea
(Camella sinensis)

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Population studies showed that drinking green tea was linked to a reduced risk in pancreatic, throat and bladder cancer.

In women, drinking 2 cups of green or black tea daily lowered the risk of getting ovarian cancer by 46%.

Dose: Drink one cup of green tea three times daily. Consider decaffeinated green tea to cut back on the amount of caffeine you get.

Some experts suggest taking 1,500 mg daily (in divided dose) of green tea extract capsules.


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Garlic helps to boost the immune system and provides antioxidant protection against cell damage.

Several population studies showed that taking garlic seemed to reduce the risk of developing prostate, colon, stomach, breast and ovarian cancer.

Clinical studies have not been done to determine if garlic can prevent cancer.

Dose: Take 600 mg one to two times daily.

Maitake Mushroom
(Grifola frondosal)

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Maitake is shown in some preliminary clinical studies to boost the immune system to help fight off cancer cells.

Several small studies have been done to show that it can help with prostate, liver, lung and breast cancers.

Dose: Studies have used 0.5 to 1 mg per kilogram (2.2 lb) of body weight daily (in divided doses). This herb can be used in addition to conventional anticancer therapy.

(Inositol hexaphosphate)

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This is a chemical that is extracted from rice bran.

It seemed to have anticancer benefits both in animal and some small human clinical trials.

Studies suggested that it can be helpful in preventing prostate, breast and colon cancer.

Dose: Take 4 to 8 grams daily.

Fish Oil

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Several large population studies show that a low level of omega-3's (found in fish oil) is linked to an increased number of colon cancer cases.

Other studies showed that eating fish (rich in omega-3's) twice weekly reduced endometrial cancer risk.

Animal studies showed that omega-3's slowed down prostate cancer cell growth.

Dose: Take a total of 1,000 mg daily of DHA and EPA found in fish oil.

Vitamin E

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One study showed that taking 200 IU daily of vitamin E for more than 10 years reduced the risk of dying from bladder cancer.

Another study showed that it helped to reduce the risk of developing pancreatic cancer.

See Using Vitamin E for Cancer Prevention for a focused discussion on using this vitamin in cancer treatment and prevention.

Dose: Take 400 to 800 IU daily. Check your multivitamin as some may already contain 400 IU in each pill.

Coenzyme Q10

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One small study involving 40 cancer patients showed that CoQ10 supplements along with other antioxidants extended the median survival rate by 40% over what doctors would have predicted.

See the report Using CoQ10 for Treating Cancer for a quick discussion.

Panax Ginseng

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Population studies showed that taking ginseng seemed to lower the risk of developing lung, lip, mouth, throat and liver cancer.

It also reduced the side effects (nausea and vomiting and fatigue) of conventional anticancer therapy.

Dose: See manufacturer recommendations as the dosage can range from 100 mg daily up to 1,000 mg three times daily.


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One small clinical study showed that this herb helped to reduce lesions in colon cancer patients.

Lab and animal studies showed anti-cancer benefits for colon, prostate, lung, skin and breast tissues.

See Benefits of Turmeric in Cancer Patients for a full discussion on this particular benefit of turmeric.

Dose: Take 500 mg of curcumin extract three times daily. Much higher doses have been suggested by some experts.

Below is a list of supplements that have limited or no clinical data to support their effectiveness in cancer prevention or treatment.

It is not a complete list as there are many other supplements that have been suggested for treating and preventing cancer by alternative health care professionals.

We have only included those that are commonly mentioned.

Explore remedies presented in the table above first before looking at the ones listed below.

Natural Remedies

What Experts Say...


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One study done in rats showed that ginger can be helpful in treating prostate cancers by inhibiting its growth.

Lab cultures of cancer cells showed extract of ginger is able to inhibit the growth of ovarian cancer cells.

Dose: Up to 2 grams per day has been used in a colon cancer prevention study.

Essiac Tea

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Lab studies show extracts from essiac tea may hold potential for treating cancer. However, this benefit was not seen in a study done on rats.

Moreover, clinical studies in cancer patients uncovered that drinking essiac tea did not offer improvements in quality of life (QOL) measurements.

See the full article Drinking Essiac Tea - An Option for Cancer Treatment? for a more detailed discussion.


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Astragalus is commonly used to boost the immune system.

Some small preliminary clinical studies showed that it can increase the body's interferon production. (Interferons are specialized proteins produced and released by the body to fight off infections and stop the growth of cancerous cells.)

Dose: Take 1,000 mg or 4 mL of the tincture three times daily.

Calcium D-glucarate

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This supplement may help the body get rid of toxic products from hormone metabolism.

Dose: Experts suggest taking 400 or 500 mg daily

Maca Root

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Some animal studies showed that maca slowed down the growth of cancer cells in animals.

Dose: Take 500 mg one to three times daily.


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Lab studies showed that this substance had anti-cancer effects on tissue cultures. It also believed to help in the detoxification of the liver.

There are currently no clinical trials to show how well this supplement would work in patients suffering with cancer.

Dose: Experts have suggested taking 400 mg daily.

Vitamin O

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This substance, composed of water and salt, has been sold as a treatment for cancer. Some people have made claims of its benefits but none are supported by evidence.

Despite its name, it is not a vitamin. Experts are highly skeptical of its functions or its existence.

Important Note: The Leaf Rating shown above applies to natural remedies for cancer prevention studies.

There are no high-quality clinical trials done with natural remedies for cancer treatment. Most cancer treatment studies are done in lab settings and animals only.

Bottom Line

Looking for the one natural remedy for cancer prevention?

So far, there are some that show promise.

Research studies have shown that some remedies appeared to slow down or stop cancer cells from growing in tissue cultures. Animal studies also seemed to show some benefits but the conclusions are far from certain.

Clinical studies do not seem to show any good evidence of benefits when taken alone. However, there is suggestive evidence that taking supplements such as Coriolus versicolor with conventional cancer therapy results in better results.

Where there is positive results is when we look at the entire population as a whole. When we consider the entire population, some natural remedies seemed to cut down on the incident of certain kinds of cancer.

But population studies are plagued with problems, namely the inability to control many variables (such as dietary habits, fitness levels, physical activity levels, lifestyle, etc...) Moreover, it is not possible to link cause and effect.

As much as you would like to find the one natural substance that will help to prevent or cure cancer, one may not exist.

How cancer starts is believed to be primarily due to damage to our critical genetic material, the DNA. The body has sophisticated DNA repair mechanisms that have been fine-tuned over millions of years to ensure that damage to the genetic codes does not compromise the health of the entire organism. Experts devoting their entire career in this area of research still do not fully understand how it works, let alone know how to control it with certainty.

Given that there are still so many unanswered questions,it would be prudent to follow a healthy lifestyle which include healthy foods, moderate physical activities and stress reduction.

By doing so, you reduce the odds of getting cancer.