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THE BREAST CANCER PREVENTION DIET: AVOID OMEGA-6 FATS

We know these fats by their more traditional name, polyunsaturated fats. They are found in most vegetable oils and margarines. One of the biggest changes in the diet during the years that breast cancer risk has risen has been the rise of omega-6 fat consumption. North Americans have shown the largest increase in consumption of vegetable oils in the world over the past 30 years. Doctors are just beginning to understand the dangers of omega-6 fats. They have proven dangerous in the test tube and in experimental animals. Few researchers realized exactly how powerful the booster effect was until the appearance of the January 12, 1998, issue of the American Medical Association s Archives of Internal Medicine. It reported in a study of 61,471 women that "polyunsaturated fat increased the risk of breast cancer by 69 percent." A previous Iowa study of 34,388 women showed a 50 percent increased risk with polyunsaturated fats.

A study of Greek women suggested an increased risk just from consuming margarines high in omega-6 fats.

The Western diet now contains up to 20 times as many omega-6 as omega-3 fats, or a 20:1 ratio. That ratio should be much closer to 4:1. For millions of years prehistoric women lived on a diet that was 1:1, closer to what we are genetically adapted to. You may say to yourself, gee, he's got to be kidding. I thought we were all encouraged to eat lots of vegetable oil and margarine as a way of preventing heart disease. That is true. We made a very bad trade a generation ago. In an effort to stem the tide of heart disease, public health authorities encouraged Americans to give up saturated fat for polyunsaturated fat. Unfortunately, polyunsaturated fats are the building blocks of the breast cell's booster system. Dean Ornish estimates that American women are eating 500 times the amount of omega-6 that is considered healthy. Harvard-trained Dr. Terry Shintani points out that hundreds of millions of women are in a large-scale experiment right now, taking huge quantities of omega-6 fats with all the attendant health risks. The American Health Foundation theorizes that omega-6 fats contribute to the metastasis and spread of cancer, whereas omega-3 causes a suppressive effect. That is solidly backed up by test-tube and animal studies. Now major nutrition department heads around the world believe that while omega-6 fats did contribute to the decrease in heart disease as a substitute for saturated fats, they also contributed substantially to the rise in breast cancer. "We chose the wrong fat," I have heard over and over again while writing this book. Many voice this opinion privately because they are waiting for more evidence, and they're right. . . not all the information is in yet. However, I firmly believe that you risk nothing by changing fats. You might ask if it s a trade-off, dropping omega-6 fatty acids to prevent breast cancer at the risk of developing heart disease. The answer is no. Omega-3 and omega-9 fatty acids are far more heart healthy than omega-6. You gain in preventing both diseases by eating omega-3 and omega-9 fatty acids. Whereas omega-6 simply decreases the bad cholesterol, omega-3 and -9 both decrease bad cholesterol and increase the good cholesterol.

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Women’s health

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THE BREAST CANCER PREVENTION DIET: AVOID OMEGA-6 FATS

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