![]() ![]() Such a classification, however, is not warranted in a strict scientific sense, primarily because a strict line of demarcation classifying and separating beneficial and harmful chemicals cannot be drawn, and because the degree of harmfulness of any compound is essentially related to the amount consumed. History has thus taught us how to classify all substances into two classes: those that are safe and those that are harmful or poisonous. We now know which products not to eat under any circumstances, which can be eaten under some circumstances, and how to process other products to render them safe for consumption. Our experience throughout history has taught us much about how to avoid injury from consuming natural products. Gathering peoples perhaps accidentally found the very species that were the most predisposed to domestication, as well as the most well-suited to fulfill human nutritional requirements. The selection by nomadic humans of only a handful of plant species for domestication and cultivation from the estimated 350,000 species of plants documented in the annals of botany and plant sciences is certainly not a chance occurrence. In their quest for food, our ancestors must have attempted to eat a variety of plants and animals and soon recognized that there were harmful as well as beneficial effects of their consumption. To all those who appreciate my sole existence, especially my wife Usha and daughter Maithili and To Ratan, Shastry, Suresh, and Prakash, for being such wonderful friends through thick and thinįood toxicology is deeply rooted in the history of civilization. Current printing (last digit): 10 9 8 7 6 5 4 3 2 1 PRINTED IN THE UNITED STATES OF AMERICAĬopyright 2002 by Marcel Dekker. Neither this book nor any part may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, microfilming, and recording, or by any information storage and retrieval system, without permission in writing from the publisher. ![]() For more information, write to Special Sales/Professional Marketing at the headquarters address above. 270 Madison Avenue, New York, NY 10016 tel: 21 fax: 21 Eastern Hemisphere Distribution Marcel Dekker AG Hutgasse 4, Postfach 812, CH-4001 Basel, Switzerland tel: 41-6 fax: 41-6 World Wide Web The publisher offers discounts on this book when ordered in bulk quantities. ISBN: 0-8247-0760-5 This book is printed on acid-free paper. ![]()
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