Health Advice

What's the Link, if Any, Between Dietary Fat and Breast Cancer?

By Walter C. Willett, M.D.

Posted: July 13, 2009

I hear that a low-fat diet reduces the chance of having breast cancer. Does that include all fat or only saturated fats?

The belief that dietary fat is related to the risk of breast cancer developed because women in Japan and some other countries where dietary fat is low also had low rates of breast cancer. However, the difference in rates of breast cancer could have been due to many other aspects of diet and lifestyle that varied among these countries.

More recently, many large follow-up studies have looked at the relationship between dietary fat and breast cancer and have consistently found little or no relationship. Also, in a very large randomized trial, the Women's Health Initiative, women assigned to a low-fat diet experienced rates of breast cancer not statistically different from that of women assigned to follow their usual diet. Thus, the available evidence does not support any substantial relationship between fat intake during midlife or later and the risk of breast cancer. Although the data are limited, some evidence suggests that high intake of red meat and high-fat dairy products during adolescence or premenopausal years may increase the risk of breast cancer before menopause.

In contrast to the disappointing data on dietary fat, there is now clear evidence that weight gain during adult life increases the risk of breast cancer—and that weight loss reduces risk. Weight gain is related to excessive calories from any source, including dietary fat and dietary carbohydrate. Replacing calories from fat with calories from carbohydrate will make little difference.

 

Health Advice Disclaimer: The information provided on this website is for the general information of the reader and to help patients become better informed to consult with their own physician. It does not constitute a doctor-patient relationship, and it is not a substitute for professional medical advice. You should not use the information on this website for diagnosing or treating… Read more >>

The Carb Link

"Weight gain is related to excessive calories from any source ..." Read Gary Taubes, "Good Calories, Bad Calories," and find out the good doctor is parroting conventional and incorrect wisdom.

The doctor is right about there not being much evidence that links dietary fat to cancer but he is ignoring the research that suggests that many cancer may be caused by a chronic elevated insulin level from an intake of carbohydrates.

Ash of GA @ Dec 09, 2009 22:10:43 PM

breast cancer diet and nutrition

Read the China Study by T. Colin Campbell and visit web site of drmcdougall.com I have no credentials but read a lot on nutrition. I followed a very low fat, plant based diet in which 80 percent of my intake is brown rice, winter squash, sweet potatoes, whole grain pastas and beans. I take in adequate amounts of leafy greens and yellow vegetables.

There is also a great movie called "The Delicate Balance" it is very informative.

I am 58-year old grandmother. I have abundant energy am rarely sick with colds and flus. Am I bragging, you bet. I wake up in the morning without ACHES OR PAINS. Was a vegetarian for 15 years before deciding to go vegan. In addtion to no meats I then came off dairy and oils and noticed a dramatic change in my energy. I thought I was healthy before, but after doing so my eczema and migraine

headaches stopped.

Now I do realize that just because one is a vegetarian or a vegan does not necessarily mean one is healthy. Only by eating low fat, WHOLE foods seems the way to go. Allowing non-processed foods to be the main part of the diet honors the body best.

Yes this does sound like a commercial, but it rings true to me in how I feel. I babysit for my four grandchildren four full days a week and have the energy and ability to do so.

Just wanted to pass this info on to you. I am no expert , however, I am a living example of eating a vegan, starch based diet and wishing others would review this way of eating and contact the experts with the credentials to offer the credibility on this subject.

There are many other countries that eat a whole foods, no or very litte meat diet. The Peruvian diet is mostly all potatoes and they are thriving! The China Study is a tremendously great book. I was so inspired I actually flew across the country to hear Colin Campbell speak at a seminar in Santa Rosa, California.

I truly think we need to look into what countries get the "big 5" diseases like prostate, breast cancers, diabetes and heart problems. The industrial lands of plenty have the highest rates for the sickest. Eating ridiculously large portioned, very high fat, acidic foods like dairy and meats and oils.

Thanks for reading this,

Judy from New Hampshire

judy Seelye of NH @ Oct 17, 2009 13:23:15 PM

Fatty Liver

Dear Doctor,

my husband suffers from fatty liver and the examination showed that he has also got diabet.

Is it possible that the fatty liver is connected with the diabet and what can be done to fight that?

Thank you in advance

Sona

Sona @ Oct 14, 2009 11:13:23 AM

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