Think A Low Fat Diet Prevents Breast Cancer?
The more I read from some of the best researchers in the country who dare to look at things differently the more frustrated I get. One cause for concern is the conventional wisdom that a low fat diet is a panacea for all that ails us. (The cholesterol myths make me nuts too, you can read about that here.)
In Good Calories, Bad Calories by Gary Taubes, which one reviewer said is “Easily the most important book on diet and health to be published in the past one hundred years.” Barbara Ehrenreich, author of Bright Sided and Nickel and Dimed said, “Taubes tackles the subject with the seriousness and scientific insight it deserves, building a devastating case against the low-fat, high-carb way of life endorsed by so many nutrition experts in recent years.”
Look, I live by the idea that we are all biochemical individuals and there is no one prescription for eating that works across the board. But based on hours of research it is becoming more clear that loading our plates with grains–whole or otherwise–while at the same time lowering fat to torturous levels is having a deleterious effect on our health–and our waist line.
The seed for this idea was planted in 1976 at the “Diet and Killer Disease” hearings. By 1982 the proposition that dietary fat caused cancer was considered so likely true that a govt report encouraged Americans to lower fat consumption to 30% or less. In 1984 the American Cancer Society jumped on the band wagon and sealed the deal. Interesting though are the many observations from around the world that refuted the findings.
The National Cancer Institute and the NAS decided to make funding available to test the hypothesis. (Hypothesis is loosely used as the dietary fat/cancer link was being reported as fact)
Walter Willet, a Harvard epidemiologist, was called upon. He lead the Nurses Health Study which began tracking diet, lifestyle and disease in 89,000 nurses in 1982. The bottom line? After 4 years the nurses who reported the lowest fat intake had the highest rate of breast cancer!
The National Cancer Institute reviewed the study and said it was good study but not the only one and continued to recommend a low fat diet. 8 months later reports Taubes, NCI researchers themselves published a study albeit from a smaller group suggesting “that eating more fat and more saturated fat correlated with less breast cancer.”
After 14 years of observation by Harvard, the research still pointed to lower fat diets resulting in higher breast cancer rates. “The data still suggested” writes Taubes, “that eating fatty foods, (even those with copious saturated fat) might protect against cancer. For every 5% of saturated fat calories that replaced carbohydrates in the diet, the risk of breast cancer decreased by 9%.”
So what do we do with this information? Sweep it under the rug so we can continue as we are with thousands of women getting breast cancer while feeling deprived, not enjoying the full spectrum of flavors and nutrition in foods? I can’t do it.
I’ll be looking for more data to support this theory and there are plenty of posts here talking about the dangers of too little fat and too many grains. I’m not talking about doing a low carb diet. I’m suggesting that having a health amount of fat and a healthy amount of beans, whole grains–not processed into chips, cereals, and bread products–and a wide range of all lean proteins and vegetables is not only the way to eat for health and weight maintenance but for disease prevention.
6 Responses to “Think A Low Fat Diet Prevents Breast Cancer?”
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Thank you Gregory Anne, for looking out for us. Your research and take on health and nutrition are sound and trustworthy. I’ve followed the news on these topics for years and I have to say I’m more confused than ever before. I’m so sick and tired of the medical community saying that it is imperative we do X to preserve our bones, ward off cancer, and keep our brains healthy and then, two years later, totally changing their minds.
I trust YOU, and I know that your many readers do as well, to wade through all of the garbage and give us the latest and best information. From there, we can make our own well informed decisions. So a great big THANK YOU for all you do!
After some 32 years of studying nutritional issues and controversies I’ve come to view fats in this way. Saturated fats are like gifted and talented students. They have a lot to offer in terms of their biological effects on tissue composition, immune function, and energy use. Monounsaturated fat are like average students. They are OK to consume to meet energy needs but that’s about it. Polyunsaturated fats are like hyperactive genius types. They need to be consumed in small amounts so as not to overwhelm the body’s ability to control them.
Obviously, this is not an exact analogy where polyunsaturates are concerned. But in terms of percentage of total caloric intake, polyunsaturates need to be both balanced and optimized to ensure that the body’s ability to control their action is not overwhelmed. In all countries where cancer and heart disease is prevalent, consumption of polyunsaturates is both unbalanced and excessive. To learn more about this, watch this 37 minute presentation entitled Why Omega-6 Fats Matter for Your Health by Dr. Bill Lands. http://videocast.nih.gov/summary.asp?live=8108 Introductory remarks take about 12 minutes. You can skip to the presentation by moving the cursor slightly to the right after the streaming begins. Dr. Lands points out that supplementing with omega-3 will, indeed, reduce your risk of dying from a heart attack. However, it will not reduce your risk of having one. To reduce risk of heart attack you must reduce intake of omega-6 fats.
Thank you David for contributing that video and your take on this important discussion. Life could be much more delicious–not to mention healthier for many–if the not for the “fat phobic orthodoxy” to quote your blog. I’m committed to getting the word out. Nice to have connected.