• Weil Nutrition Corner
  • Meet Dr. Weil
  • Origins
  • Healthy Aging
  • Marketplace
  • Podcasts
  • Accessibility
  • Subscribe
Dr. Weil Logo Dr. Weil Logo Weil™ Andrew Weil, M.D.
  • Health & Wellness
    Health & Wellness
    Body, Mind & Spirit
    • Addiction
    • Allergy & Asthma
    • Autoimmune Disorders
    • Back Pain
    • Bone & Joint
    • Cancer
    • Colds & Flu
    • Dental & Oral
    • Diabetes
    • Disease & Disorders
    • Ears, Nose, & Throat
    • Feet
    • Gastrointestinal
    • Hair, Skin, & Nails
    • Headache
    • Heart
    • Insects & Parasites
    • Liver & Kidney
    • Mental Health
    • Pregnancy & Fertility
    • Respiratory
    • Sexual Health
    • Sleep Issues
    • Stress & Anxiety
    • Vision
    Balanced Living
    • Exercise & Fitness
    • Gardening
    • Healthy Home
    • Healthy Living
    • Meditation & Inspiration
    • Meet Dr. Weil
    • Pets & Pet Care
    • Technology
    • Wellness Therapies
    Health Centers
    • Aging Gracefully
    • Children
    • Condition Care Guide
    • Men
    • Women
  • Diet & Nutrition
    Diet & Nutrition
    Anti-Inflammatory Diet & Pyramid
    Cooking & Cookware
    Diets & Weight Loss
    Food Safety
    Nutrition
    Recipes
  • Vitamins, Supplements & Herbs
    Vitamins, Supplements & Herbs
    Herbs
    Supplements & Remedies
    Vitamins
  • Ask Dr. Weil
  • Blogs
    Blogs
    Bulletins
    Health Tips
    Spontaneous Happiness
  • Mushrooms
  • Sleep
Press "Enter" to search
Dr. Weil Logo Weil™ Andrew Weil, M.D.
  • Health & Wellness
    Health & Wellness
    Body, Mind & Spirit
    • Addiction
    • Allergy & Asthma
    • Autoimmune Disorders
    • Back Pain
    • Bone & Joint
    • Cancer
    • Colds & Flu
    • Dental & Oral
    • Diabetes
    • Disease & Disorders
    • Ears, Nose, & Throat
    • Feet
    • Gastrointestinal
    • Hair, Skin, & Nails
    • Headache
    • Heart
    • Insects & Parasites
    • Liver & Kidney
    • Mental Health
    • Pregnancy & Fertility
    • Respiratory
    • Sexual Health
    • Sleep Issues
    • Stress & Anxiety
    • Vision
    Balanced Living
    • Exercise & Fitness
    • Gardening
    • Healthy Home
    • Healthy Living
    • Meditation & Inspiration
    • Meet Dr. Weil
    • Pets & Pet Care
    • Technology
    • Wellness Therapies
    Health Centers
    • Aging Gracefully
    • Children
    • Condition Care Guide
    • Men
    • Women
  • Diet & Nutrition
    Diet & Nutrition
    Anti-Inflammatory Diet & Pyramid
    Cooking & Cookware
    Diets & Weight Loss
    Food Safety
    Nutrition
    Recipes
  • Vitamins, Supplements & Herbs
    Vitamins, Supplements & Herbs
    Herbs
    Supplements & Remedies
    Vitamins
  • Ask Dr. Weil
  • Blogs
    Blogs
    Bulletins
    Health Tips
    Spontaneous Happiness
  • Mushrooms
  • Sleep
  • Weil Nutrition Corner
  • Meet Dr. Weil
  • Origins
  • Healthy Aging
  • Marketplace
  • Podcasts
  • Accessibility
  1. Home
  2. Health & Wellness
  3. Body, Mind & Spirit
  4. Cancer

Preventing Cancer Recurrence?

I was discouraged to read about the study finding that a diet high in fruits and vegetables didn’t prevent cancer recurrence. What did you think about it?

Andrew Weil, M.D. | September 27, 2007

friendly african american medical nurse handshaking with senior patient
2 min

The study you refer to was published in the Journal of the American Medical Association on July 18, 2007. It found that a diet very high in fruits, vegetables and fiber had no effect on breast cancer recurrence among the 3,088 women who participated. Researchers from the University of California at San Diego followed the women for an average of 7.3 years, during which approximately half of them increased their intake of vegetables compared to the other half who acted as a control group and followed a diet of five or more servings of fruit and vegetables daily.

The women in the “intervention” group on the high fruit and vegetable diet increased their fruit consumption by 25 percent over the control group, upped their fiber by 30 percent and reduced the calories from fat in their diets by 13 percent. All of the women in the study received comparable medical care.

During the course of the study, 16.7 percent of the women in the intervention group and 16.9 percent of those in the control group suffered breast cancer recurrences and 315 of them died, 155 in the “intervention” group and 160 in the control group.

This is a disappointing outcome. But it is important to remember that with breast cancer, the amount of food you eat is a very important consideration, since overweight postmenopausal women are at increased risk of the disease in the first place and are at increased risk of recurrence if they remain overweight after diagnosis.

In this study, the researchers reported that the women in the intervention group never did get their fat consumption down to 15 to 20 percent of total calories as instructed. In fact, by the end of the study they were eating a higher percentage of fat than they had been at the outset. Yet even considering this anomaly in the study, I’m not sure that amount of dietary fat is the problem. Rather, people should be eating the right kinds of fat. I might also have wanted to look at the weights of these individuals just as much as the diets they were on to see if they did in fact maintain or lose weight while increasing their fruit/veggie intake.

Dietary intervention studies are very hard to do – researchers have to carefully monitor the participants to make sure that they stick to the diets. That isn’t easy when thousands of participants are involved. Nor is it easy to make sure that, aside from diet, all other factors are equal between the two groups.

Despite these results, eating more fruits and vegetables can only benefit you, whether or not cancer is a factor in your health. Aside from the superior nutrition they afford, the more fruits and vegetables you eat, the easier it should be to keep your weight under control. Pay attention to low glycemic fruits and vegetables and healthy fats as suggested in my anti-inflammatory diet.

Andrew Weil, M.D.

Advertisement
Related Weil Products

Dr. Weil on Healthy Aging - Your Online Guide to the Anti-Inflammatory Diet!

Everything you need to get started eating a healthful, satisfying diet is here – including eating and shopping guides, over 300 recipes, and an exclusive version of Dr. Weil’s Anti-Inflammatory Food Pyramid! Start your 14-day free trial now – and start eating anti-inflammatory today!
Get Started
Dr. Weil on Healthy Aging

Start Your 14-Day Free Trial

Free Newsletters

Stay Connected With Dr. Weil

Anti-Inflammatory Diet

Follow Dr. Weil’s Food Pyramid

Get Dr Weils Newsletter Updates

Exclusive Lifestyle, Nutrition & Health Advice

Dr. Weil's FREE health living advice delivered to you!

By clicking "Subscribe," you agree to the DrWeil.com Terms and Conditions and Privacy Policy. You also agree to receive emails from DrWeil.com, and you may opt out of DrWeil.com subscriptions at any time.

Trending Now

3-d mammograms
Cancer

3-D Mammograms?

a better test for breast cancer
Cancer

A Better Test For Breast Cancer?

HDL Cholesterol & LDL Cholesterol: What They Mean | Heart Health | Andrew Weil, M.D.
Cancer

A Blood Test for Breast Cancer?

a test for ovarian cancer
Cancer

A Test for Ovarian Cancer?

Dr. Weil Logo Weil™ Andrew Weil, M.D.
Dr. Weil's Signature

Exclusive Lifestyle, Nutrition & Health Advice

  • About Us
  • Press Information
  • Advertising
  • Contact Us
  • Terms of Use
  • Privacy Policy
  • Accessibility

Terms of Use | Privacy Policy

Information on this website is provided for informational purposes only and is not intended as a substitute for the advice provided by your physician or other healthcare professional. You should not use the information on this website for diagnosing or treating a health problem or disease, or prescribing any medication or other treatment. Any third party offering or advertising on this website does not constitute an endorsement by Andrew Weil, M.D. or Healthy Lifestyle Brands.

© Copyright 2025 Healthy Lifestyle Brands, LLC. All rights reserved. Reproduction in whole or in part without permission is prohibited. www.drweil.com