• 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

Does Diet Cause Lung Cancer?

As a former smoker, I worry about lung cancer, but now I hear that eating the wrong diet places nonsmokers at risk. What kind of diet is associated with lung cancer?

Andrew Weil, M.D. | June 24, 2016

fresh vegetables in a wicker basket
2 min

First, I’m happy to hear that you no longer smoke. Quitting is the most important thing anyone can do to reduce the risk of lung cancer. The link between diet and lung cancer is a relatively new one, revealed in a study from the M.D. Anderson Cancer Center in Texas. Researchers there found an increased risk of the disease in nonsmokers whose diet was high on the glycemic index (GI). In addition, the study linked an increased risk of squamous cell carcinoma (SCC), a subtype of lung cancer, to daily diets that ranked high on the GI.

The glycemic index ranks carbohydrate foods on the basis of how quickly they affect blood sugar (glucose). This is important, because regularly eating foods that rank high on the glycemic index will produce spikes in blood sugar that, over time, can lead to insulin resistance – the loss of sensitivity to insulin, the hormone needed to allow blood sugar to enter cells for use as fuel. Insulin resistance is associated with obesity, high blood pressure, elevated blood fats, and an increased risk of type 2 diabetes.

Some background: the Texas team noted that previous research has suggested that high-GI diets increase levels of insulin-like growth factors, hormones which promote inflammation and cell proliferation and have been linked to several types of cancer.

In order to examine the association – if any – between a high GI diet and lung cancer, the investigators surveyed 1,905 patients newly diagnosed with lung cancer and 2,413 healthy individuals. All were asked to report on their diets and health histories.

On the basis of this information the researchers found that participants who never smoked whose daily diets ranked highest on the glycemic index were more than twice as likely to develop lung cancer compared to those whose diets ranked lowest. The study also showed that those whose diets ranked highest on the glycemic index were 92 percent more likely to develop squamous cell carcinoma than those whose diets ranked lowest. Interestingly, among participants with fewer than 12 years of education, those whose diets ranked highest on the GI were 77 percent more likely to develop lung cancer than those whose diets ranked lowest. However, for those with more than 12 years of schooling, the lung cancer risk increased by only 33 among those with a high GI diet. The researchers noted that educational level is a proxy for socioeconomic status, which has been linked with both diet quality and smoking behavior.

Because this study included only non-Hispanic whites, the researchers wrote that further studies are needed to see if the findings hold true among other ethnic groups.

Bottom line: if you want to avoid lung cancer, don’t smoke. And for the sake of your health in general I recommend eating low on the glycemic index. Among other benefits, it could help reduce the risk of lung cancer.

Andrew Weil, M.D.

Source:
Xifeng Wu et al, “Glycemic Index, Glycemic Load, and Lung Cancer Risk in Non-Hispanic Whites.” Cancer Epidemiology, Biomarkers and Prevention, March 2016, doi: 10.1158/1055-9965.EPI-15-0765

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