---
title: "World Vegetarian Congress - Phytochemicals and Wellness - IVU - International Vegetarian Union"
description: "World Vegetarian Congress - Phytochemicals and Wellness: International Vegetarian Union (IVU) 33rd World Vegetarian Congress Chiang Mai, Thailand, January 4 - 10, 1999 'Vegetarianism is the Way' an unforgettable visual, cultural and gastronomic experience Phytochemicals and Wellness A talk given"
url: "https://ivu.org/international-vegetarian-union/resources/interviews/3741-congress-thai99-texts-dunn.html"
date: "2026-11-06T00:12:36+00:00"
language: "en-GB"
---

#  World Vegetarian Congress - Phytochemicals and Wellness

**International Vegetarian Union (IVU)** | ![IVU logo](https://ivu.org/images/legacy/history/members/pics/ivu-con4.gif) |  |
|---|---|
 | ![Congress Logo](https://ivu.org/images/legacy/history/congress/thai99/pics/logo99.gif) **33rd World Vegetarian Congress**    Chiang Mai, Thailand, January 4 - 10, 1999    *'Vegetarianism is the Way'*    an unforgettable visual, cultural and gastronomic experience   Phytochemicals and Wellness  *A talk given by Prof. Floyd W. Dunn*  Everyone desires good health and a feeling of well-being; no one wants to be "sick." Yet, sometimes poor eating habits allow our bodies to become sick in ways that could be prevented. Proper nutrition allows our body to be "well" and helps us avoid sickness and disease. We have only one body, so we need to protect it throughout a lifetime.  Among the conservative classes of diet, now there is growing recognition that wellness requires another class of dietary components called "phytochemicals." found in plants. Though they are not considered essential "nutrients", but they provide important protection against toxins, cancer and other common disorders of the body.  Plant products: fresh vegetables, fruits, legumes, whole grains, herbs and nuts satisfy hunger and supply necessary nutrients, fiber and protective agents; and, at the same time, allow for an easily accessible low-calorie diet. They impart unique flavors and aromas, and many can (and should) be eaten raw without special preparation. Gentle cooking (steaming or stir-frying) allows for preservation of beneficial components. A plant-based diet can be very simple to prepare and requires little clean-up in the kitchen.  Society who consumes a diet that is high in calories, low in fiber, low in vitamins and minerals, and deficient in phytochemicals. Obesity has become a major health problem. These deleterious, health-limiting dietary characteristics could be corrected with a simple, inexpensive plant-based diet.  "Phytochemical" refers to a very large group of plant components which have special benefits for promoting and maintaining good health. A few examples are:-  Sulforaphane, found in cruciferous vegetables (broccoli, cauliflower, cabbage, etc.) can boost the synthesis of enzymes which detoxify carcinogens. These vegetables also contain such protective substances as aromatic isothiocyanates, glucosinolates, indoles, phenols, and dithioethiones.  Carotenes in yellow fruits and vegetables, lycopenes in tomatoes, allicin in garlic and onion, curcumin in tumeric, phytoestrogens in soy beans, gingerol in ginger, quercitin and limonene in citrus fruits---these are just a few more examples of phytochemicals that may protect against allergies, heart disorders, arthritis and other degenerative diseases.  It is neither necessary nor desirable to wait for definitive evidence of the individual properties of each phytochemical. By eating generous amounts of a variety of fruits and vegetables we can obtain the protections needed for optimal health. Becoming more vegetarian is important for reasons greater than just "avoiding meat" and refraining from animal products. Plant materials, being imitated to animal materials might be deficient in phytochemicals even though entirely of plant origin.  A wholesome diet will include several servings each day of fruits and vegetables, with a variety of colors: red, yellow, orange, purple, green. Such common foods as brocolli, carrots, soy beans and soy products, garlic, onions, cauliflower, lettuce, cabbage, eggplant, peppers, corn, whole grains, citrus fruits, pineapple, mangos, apples and bananas are examples to look for on a regular basis. Such a diet, along with a health-promoting life-style, offers the prospect of good health, protection against toxins and degenerative diseases, and can add years to one's life span.  *Prof. Floyd W. Dunn has been a visiting professor in Thailand in 1958 up to now. He is a biochemistry professor and his research interest includes synthesis of unusual amino cids and peptides, cancer and cancer prevention.*      A note on this archive. The history section of this website is drawn from a body of legacy content originally compiled by John Davis, former manager of the International Vegetarian Union. It represents his curation of historical material, and in places includes passages written by him directly.  Over the years, the IVU website has migrated between several different hosting servers. In the course of these migrations, a number of PDF files were unfortunately lost, and **some links to PDF documents may no longer function**. Where this is the case, we have chosen to leave the original link text in place, as it may itself carry information of historical value.  - Hits: 1265    ###  Vegan Recipes   - [![Roasted Butternut Squash Mac N’ Cheese](https://ivu.org/media/zoo/images/Oct_Mac_46c3189a95e57f8a65ff8f0a25f09082.jpg "Roasted Butternut Squash Mac N’ Cheese")](https://ivu.org/vegan-recipes-around-the-world/vegan-food-academy/front-page/item/roasted-butternut-squash-mac-n-cheese.html "Roasted Butternut Squash Mac N’ Cheese")           ####  [Roasted Butternut Squash Mac N’ Cheese](https://ivu.org/vegan-recipes-around-the-world/vegan-food-academy/front-page/item/roasted-butternut-squash-mac-n-cheese.html "Roasted Butternut Squash Mac N’ Cheese")            [United States of America](https://ivu.org/vegan-recipes-around-the-world/vegan-food-academy/front-page/category/united-states-of-america.html) [Pasta](https://ivu.org/vegan-recipes-around-the-world/vegan-food-academy/front-page/category/pasta-2.html) [North America](https://ivu.org/vegan-recipes-around-the-world/vegan-food-academy/front-page/category/north-america.html) - [![VEGAN TOFU STUFFED MUSHROOMS  WITH VIETNAMESE CORIANDER](https://ivu.org/media/zoo/images/mon%201_7356bb2bf2c3d2900e234308cef30b12.jpg "VEGAN TOFU STUFFED MUSHROOMS  WITH VIETNAMESE CORIANDER")](https://ivu.org/vegan-recipes-around-the-world/vegan-food-academy/front-page/item/vegan-tofu-stuffed-mushrooms-with-vietnamese-coriander.html "VEGAN TOFU STUFFED MUSHROOMS  WITH VIETNAMESE CORIANDER")           ####  [VEGAN TOFU STUFFED MUSHROOMS WITH VIETNAMESE CORIANDER](https://ivu.org/vegan-recipes-around-the-world/vegan-food-academy/front-page/item/vegan-tofu-stuffed-mushrooms-with-vietnamese-coriander.html "VEGAN TOFU STUFFED MUSHROOMS  WITH VIETNAMESE CORIANDER")            [Vietnam](https://ivu.org/vegan-recipes-around-the-world/vegan-food-academy/front-page/category/vietnam.html) [Snacks](https://ivu.org/vegan-recipes-around-the-world/vegan-food-academy/front-page/category/snacks.html) - [![VEGAN AVOCADO SALAD](https://ivu.org/media/zoo/images/mon%2072_fb2c33f4a46bf6a22db591aa1374b61d.jpg "VEGAN AVOCADO SALAD")](https://ivu.org/vegan-recipes-around-the-world/vegan-food-academy/front-page/item/vegan-avocado-salad.html "VEGAN AVOCADO SALAD")           ####  [VEGAN AVOCADO SALAD](https://ivu.org/vegan-recipes-around-the-world/vegan-food-academy/front-page/item/vegan-avocado-salad.html "VEGAN AVOCADO SALAD")            [Vietnam](https://ivu.org/vegan-recipes-around-the-world/vegan-food-academy/front-page/category/vietnam.html) [salads](https://ivu.org/vegan-recipes-around-the-world/vegan-food-academy/front-page/category/salads.html)       ###  VFA Blog   - ####  [Temple Food: The Ancient Secret of the Vegan Diet and the Renaissance of Kimchi](https://ivu.org/vegan-recipes-around-the-world/vegan-food-academy/blog-front-page/item/temple-food-the-ancient-secret-of-the-vegan-diet-and-the-renaissance-of-kimchi.html "Temple Food: The Ancient Secret of the Vegan Diet and the Renaissance of Kimchi")                - [Read more](https://ivu.org/vegan-recipes-around-the-world/vegan-food-academy/blog-front-page/item/temple-food-the-ancient-secret-of-the-vegan-diet-and-the-renaissance-of-kimchi.html)       ###  Science   - [ pdf ](https://ivu.org/international-vegetarian-union/resources/science/207-rapid-global-phaseout-of-animal-agriculture-has-the-potential-to-stabilize-greenhouse-gas-levels-for-30-years.html)     [ Rapid global phaseout of animal agriculture has the potential to stabilize greenhouse gas levels for 30 years](https://ivu.org/international-vegetarian-union/resources/science/207-rapid-global-phaseout-of-animal-agriculture-has-the-potential-to-stabilize-greenhouse-gas-levels-for-30-years.html) Popular - [ pdf ](https://ivu.org/international-vegetarian-union/resources/science/206-animal-agriculture-and-climate-change-a-qualitative-holistic-note.html)     [ Animal Agriculture and Climate change a Qualitative holistic note](https://ivu.org/international-vegetarian-union/resources/science/206-animal-agriculture-and-climate-change-a-qualitative-holistic-note.html) Popular - [ pdf ](https://ivu.org/international-vegetarian-union/resources/science/202-environmental-impact-of-two-plant-based-isocaloric-and-isoproteic-diets-the-vegan-diet-vs-the-mediterranean-diet.html)     [ Environmental Impact of Two Plant Based Isocaloric and Isoproteic Diets The Vegan Diet vs the Mediterranean Diet](https://ivu.org/international-vegetarian-union/resources/science/202-environmental-impact-of-two-plant-based-isocaloric-and-isoproteic-diets-the-vegan-diet-vs-the-mediterranean-diet.html) Popular            ###  History     [ ![Taiwan's climate legislation embraces plant based eating](https://ivu.org/joomlatools-files/docman-images/generated/0f49c89d1e7298bb9930789c8ed59d48.jpg)    Taiwan's climate legislation embraces plant based eating                ](https://ivu.org/international-vegetarian-union/resources/history/vegan-nutrition-history/283-taiwans-climate-legislation-embraces-plant-based-eating.html "Taiwan's climate legislation embraces plant based eating")       [ ![Chinese Dietary Guidelines 2022   Guideline 4 Eat fish poultry eggs, and lean meat in moderation](https://ivu.org/joomlatools-files/docman-images/generated/6a9aeddfc689c1d0e3b9ccc3ab651bc5.jpg)    Chinese Dietary Guidelines 2022 Guideline 4 Eat fish poultry eggs, and lean meat in moderation                ](https://ivu.org/international-vegetarian-union/resources/history/vegan-nutrition-history/282-chinese-dietary-guidelines-2022-guideline-4-eat-fish-poultry-eggs-and-lean-meat-in-moderation.html "Chinese Dietary Guidelines 2022   Guideline 4 Eat fish poultry eggs, and lean meat in moderation")       [ ![Reply to Proposal No 4748 (Agriculture and Water Conservancy Category No  297) of the Third Session of the 13th National Committee of the Chinese People´s Political Consultative Conference](https://ivu.org/joomlatools-files/docman-images/generated/e3796ae838835da0b6f6ea37bcf8bcb7.jpg)    Reply to Proposal No 4748 (Agriculture and Water Conservancy Category No 297) of the Third Session of the 13th National Committee of the Chinese People´s Political Consultative Conference                ](https://ivu.org/international-vegetarian-union/resources/history/vegan-nutrition-history/281-reply-to-proposal-no-4748-agriculture-and-water-conservancy-category-no-297-of-the-third-session-of-the-13th-national-committee-of-the-chinese-peoples-political-consultative-conference.html "Reply to Proposal No 4748 (Agriculture and Water Conservancy Category No  297) of the Third Session of the 13th National Committee of the Chinese People´s Political Consultative Conference")                                ###  Download the Vegetarian Nutrition Booklet for Kids and Adolescents   - [ pdf ](https://ivu.org/nutrition/nutrition-articles/health-nutrition/kids-booklet/117-vegetarian-nutrition-booklet-for-kids-and-adolescents.html)     [ vegetarian-nutrition-booklet-for-kids-and-adolescents](https://ivu.org/nutrition/nutrition-articles/health-nutrition/kids-booklet/117-vegetarian-nutrition-booklet-for-kids-and-adolescents.html) Popular               7676 downloads - [ pdf ](https://ivu.org/nutrition/nutrition-articles/health-nutrition/kids-booklet/122-booklet-ivu-portugues-web.html)     [ Booklet IVU portugues web](https://ivu.org/nutrition/nutrition-articles/health-nutrition/kids-booklet/122-booklet-ivu-portugues-web.html) Popular               7319 downloads - [ pdf ](https://ivu.org/nutrition/nutrition-articles/health-nutrition/kids-booklet/123-nutrition-guide-for-students-with-khmer-translation.html)     [ Nutrition Guide for Students (with Khmer Translation)](https://ivu.org/nutrition/nutrition-articles/health-nutrition/kids-booklet/123-nutrition-guide-for-students-with-khmer-translation.html) Popular               6052 downloads - [ pdf ](https://ivu.org/nutrition/nutrition-articles/health-nutrition/kids-booklet/130-2023-05-03-18-17-13.html)     [ ベジタリアン・ヴィーガン栄養ガイド](https://ivu.org/nutrition/nutrition-articles/health-nutrition/kids-booklet/130-2023-05-03-18-17-13.html) Popular               5524 downloads - [ pdf ](https://ivu.org/nutrition/nutrition-articles/health-nutrition/kids-booklet/124-vegetarian-nutritie-cartea-pentru-copii-si-adolescenti.html)     [ BROȘURA DE NUTRIȚIE VEGETARIANĂ - Romanian](https://ivu.org/nutrition/nutrition-articles/health-nutrition/kids-booklet/124-vegetarian-nutritie-cartea-pentru-copii-si-adolescenti.html) Popular               5040 downloads - [ pdf ](https://ivu.org/nutrition/nutrition-articles/health-nutrition/kids-booklet/131-cartel-de-nutricion-vegetariana.html)     [ CARTEL DE NUTRICIÓN VEGETARIANA](https://ivu.org/nutrition/nutrition-articles/health-nutrition/kids-booklet/131-cartel-de-nutricion-vegetariana.html) Popular               4558 downloads            ###  Nutrition   - [ pdf ](https://ivu.org/nutrition/nutrition-articles/health-nutrition/294-what-are-the-best-sources-of-protein-introducing-the-bpi-score.html)     [ What are the best sources of protein Introducing the BPI Score](https://ivu.org/nutrition/nutrition-articles/health-nutrition/294-what-are-the-best-sources-of-protein-introducing-the-bpi-score.html) Popular               603 downloads - [ pdf ](https://ivu.org/nutrition/nutrition-articles/health-nutrition/250-2024-the-omniveg-study-health-outcomes-of-shifting-from-a-traditional-to-a-vegan-mediterranean-diet-in-healthy-men-a-controlled-crossover-trial.html)     [ 2024 The OMNIVEG STUDY Health outcomes of shifting from a traditional to a vegan Mediterranean diet in healthy men A controlled crossover trial](https://ivu.org/nutrition/nutrition-articles/health-nutrition/250-2024-the-omniveg-study-health-outcomes-of-shifting-from-a-traditional-to-a-vegan-mediterranean-diet-in-healthy-men-a-controlled-crossover-trial.html) Popular               2782 downloads - [ pdf ](https://ivu.org/nutrition/nutrition-articles/health-nutrition/205-plant-based-nutrition-exploring-health-benefits-for-atherosclerosis-chronic-diseases-and-metabolic-syndrome-a-comprehensive-review.html)     [ Plant Based Nutrition Exploring Health Benefits for Atherosclerosis, Chronic Diseases, and Metabolic Syndrome—A Comprehensive Review](https://ivu.org/nutrition/nutrition-articles/health-nutrition/205-plant-based-nutrition-exploring-health-benefits-for-atherosclerosis-chronic-diseases-and-metabolic-syndrome-a-comprehensive-review.html) Popular               3834 downloads - [ pdf ](https://ivu.org/nutrition/nutrition-articles/health-nutrition/204-2024-plant-and-animal-fat-intake-and-overall-and-cardiovascular-disease-mortality-main-folder-all-cause-mortality.html)     [ 2024 Plant and Animal Fat Intake and Overall and Cardiovascular Disease Mortality Main Folder All Cause Mortality](https://ivu.org/nutrition/nutrition-articles/health-nutrition/204-2024-plant-and-animal-fat-intake-and-overall-and-cardiovascular-disease-mortality-main-folder-all-cause-mortality.html) Popular               4052 downloads                                ![](https://ivu.org/media/yootheme/cache/02/adult-guide-029d8cad.png)### The International Vegetarian Union’s Vegan Nutrition Guide for Adults  In 2 versions:  - [For healthcare professionals](https://ivu.org/nutrition/nutritional-guide/the-international-vegetarian-union-s-vegan-nutrition-guide-for-adults-healthcare-professionals.html) - [General Public Edition](https://ivu.org/nutrition/nutritional-guide/guide-for-non-healthcare-professionals.html)    [Get it now](https://ivu.org/nutrition/nutritional-guide.html)         ![](https://ivu.org/images/banners/booklet2.jpg)### Vegetarian Nutrition Booklet A Dietary Approach to Vegetarianism for Kids and Adolescents  The intention of this booklet is present to kids and adolescents a healthy vegan diet    [Read more](https://ivu.org/nutrition/vegetarian-nutrition-book-for-kids-and-adolescents.html)                 Vegan Nutrition            ![](https://ivu.org/media/yootheme/cache/a6/logo_IVU_01_SLOGAN-a678b962.png)               ### Presidents, Chair and Council  - [IVU President and Chair of the International Council](https://ivu.org/ivu-chair.html) - [IVU Honorary President](https://ivu.org/ivu-honorary-president.html) - 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