• 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. Diet & Nutrition
  3. Nutrition

Can Going Vegetarian Relieve Depression?

I understand that some research has found that giving up meat, poultry and fish in favor of a vegetarian diet can help relieve depression. Is this true? If so, can you tell me what makes the difference?

Andrew Weil, M.D. | May 14, 2012

Delicious and healthy breakfast on the summer day
2 min

An interesting new study did look at this issue and found that avoiding meat, fish and poultry leads to more frequent reports of positive mood. The researchers, from Benedictine University in Illinois and Arizona State University, noted that in general, vegetarians report better mood than omnivores (those whose diets include meat, fish and poultry). They also observed that omnivores whose diets are rich in fish have been shown to have a lower risk of depressive symptoms than those whose diets don’t include much fish.

On this site, I’ve discussed scientific data linking low tissue levels of the two essential omega-3 fatty acids found in fish oil – EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid) – to a host of mental/emotional disorders, including depression, violent behavior, suicide, and learning disabilities. Dietary supplementation providing these fats, usually in the form of fish oil, has proved to be an effective, natural, and nontoxic therapy for bipolar disorder, attention deficit hyperactivity disorder, postpartum depression, and seasonal affective disorder. It also helps prevent depression and improve overall emotional well-being.

In the latest study, published February 14, 2012 in Nutrition Journal, the investigators noted that high intakes of arachidonic acid (a long-chain omega-6 fatty acid found in fatty red meat, egg yolks and organ meat) can promote brain changes that disturb mood, and wanted to explore how changing the fatty acid profile in the diet might impact mood. They recruited 39 volunteers for a two week trial. The participants were divided into three groups. Those in the “omnivore” group continued to follow their usual diets and to eat meat, fish or poultry at least once a day; those in the second group were told to avoid meat and poultry and to have at least three to four servings of fish per week (they were also allowed to eat eggs); and those in the third group avoided all animal derived foods, except dairy, for the duration of the study.

At the end of the two weeks, the researchers tested all of the participants with standard questionnaires designed to measure stress and mood and found that those on the vegetarian diet showed a decline in stress and tension and reported better moods than those in the other two groups. The researchers suggested that these positive changes could have been due to a reduction in the intake of arachidonic acid as well as to the effects of antioxidants in fruits and vegetables that may have boosted mood via a reduction of oxidative stress. They also pointed out that meat from grain-fed animals provides five times the ratio of omega-6 to omega-3 fats found in meat from grass-fed animals and may raise the risk for inflammation-related diseases including depression.

This small study hints at effects of dietary fats on mood and, perhaps, the possible benefits of a vegetarian diet. The researchers noted that their findings warrant further investigation.

Andrew Weil, M.D.

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

With long green ice tea and glass teapot on unfocused background
Nutrition

10 Reasons To Drink Green Tea

Olive oil in small glass container with bottle of oil and cubes of butter
Nutrition

A Better Butter?

A Better Kind Of Sugar? | Nutrition | Andrew Weil, M.D.
Nutrition

A Better Kind Of Sugar?

Fried fish fillets with vegetable garnish on white
Nutrition

A Better Pink Fish?

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