As a nutritionist, my focus is on prevention. I rarely talk about ways to treat a disease like cancer. But if you had to guess, you probably know what I think of chemotherapy. Without a doubt, it's one of the most brutal treatments in the so- called modern era.

But there are things you can do to counteract its effects. In fact, a new study shows that one nutrient given alongside chemo can actually increase survival time in women with advanced breast cancer.

Nutrient supercharges chemo

French scientists recruited 25 women with breast cancer to take part in their study. Almost 70 percent of the women had advanced stages of cancer, with metastases to the liver and other sites.

Each of the women received chemotherapy to treat their cancer. They also received 1.8 grams per day of the omega-3 fatty acid DHA.

Why DHA, you wonder? Well, scientists believe that DHA makes cancer tumours more "sensitive" to chemotherapy. In other words, it helps the chemo to kill more cancer cells.

Women with most DHA double survival rates

The women followed this regimen for two to six months. Then, they went on living their lives as best they could. Scientists checked back in on the women after 31 months. They found that--on average--most of the women survived 22 months. But the women with the most DHA in their blood survived for 34 months.

Now, I know these statistics are tough to read. But for anyone with cancer, it's critically important. Especially when you consider that the average survival rate for a woman with stage IV breast cancer is normally just 14 months with chemo alone.

But in this study, the women with the most DHA in their blood added 20 months to their life. In other words, they more than doubled their prognosis just by adding an omega-3 supplement to their regimen.

Drugs versus Nutrients

In this study, the omega-3 fatty acid DHA added up to 20 months to a woman's life with advanced breast cancer. Now, let's compare that to the blockbuster drug Avastin.

Avastin is not a chemotherapy drug. It doesn't kill cancer cells directly. Instead, it cuts off the blood supply to the malignant tumors. In theory, it should boost the effects of chemotherapy (much like DHA, you could argue). But Avastin can cost up to $9,000 per month. Plus, side effects include GI perforation, stroke, and heart attack. And here's the real kicker...

A recent study on colon cancer showed that Avastin--despite the hefty price tag – only extends a patient's life by an average of four months.

But what really makes me sick is that the company that makes Avastin wants to see the drug used to treat other types of cancer. Just last month the company wrapped up a clinical trial involving Avastin and advanced stomach cancer patients.

In this trial, scientists divided patients into two groups. One group received Avastin plus another chemo drug called Xeloda. The other group received a placebo plus Xeloda. Turns out the Avastin group didn't live any longer than the placebo group did.

However, despite these shameful results, Avastin is still the go-to drug for most oncologists. It pulled in roughly $6 billion in 2009 alone.

Support without side effects

If you're diagnosed with cancer, make sure to weigh your options carefully. And if you decide to include chemotherapy in your treatment, you should definitely consider adding a fish oil supplement.

The women in the study took 1.8 grams of DHA per day. To get that amount of DHA, you'll have to take nine of the large fish oil capsules. (There are usually about 200 mg of DHA in each fish oil capsule.)

And just in case you're wondering, fish oil--even at these high levels--is completely non-toxic. You'll just have to contend with the fishy aftertaste. To avoid this, take the fish oil with meals. Also, make sure to take at least 1,200 IU of all-natural mixed tocopherol vitamin E to wipe out free radicals generated by the fish oil.

Additional support beyond fish oil

Without a doubt, cancer takes an enormous toll on your body. So, it's critically important to give your body all the nutritional support it needs in order for it to have the strength it needs to fight the cancer.

First, to support your immune system, be sure to take a good multivitamin every day along with 2,000 mg ascorbic acid or ascorbate vitamin C three times a day. In addition, you may want to consider taking alpha lipoic acid, an antioxidant that's both fat- and water-soluble. Third, I'd also recommend milk thistle to help support your liver as it flushes away toxins from your body. And lastly, for anyone taking chemo, ginger tablets can really help ease nausea during treatment.