Principal Modes of Clay Use
There is a long tradition of the use of clay for therapeutic purposes. The so-called healing or curative clay can be used either for internal or external applications. The so-called edible clay is a type of healing clay used for internal applications, ing
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nd Health Properties and Therapeutic Uses
Clays and Health
Michel Rautureau Celso de Sousa Figueiredo Gomes Nicole Liewig Mehrnaz Katouzian-Safadi
Clays and Health Properties and Therapeutic Uses
Michel Rautureau Docteur d’état ès sciences physiques Maître de conférences des universités, retraité Orléans, France Nicole Liewig Docteur d’État ès sciences naturelles Chargée de recherche au CNRS Strasbourg, France
Celso de Sousa Figueiredo Gomes Ph.D in Materials Science Professeur, université d’Aveiro (Portugal) Aveiro, Portugal Mehrnaz Katouzian-Safadi Docteur d’état ès sciences biologiques Centre national de la recherche scientifique Chargée de cours, université Paris 7 Paris, France
ISBN 978-3-319-42883-3 ISBN 978-3-319-42884-0 (eBook) DOI 10.1007/978-3-319-42884-0 Library of Congress Control Number: 2017935406 © Springer International Publishing AG 2017 This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. The publisher, the authors and the editors are safe to assume that the advice and information in this book are believed to be true and accurate at the date of publication. Neither the publisher nor the authors or the editors give a warranty, express or implied, with respect to the material contained herein or for any errors or omissions that may have been made. The publisher remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. Printed on acid-free paper This Springer imprint is published by Springer Nature The registered company is Springer International Publishing AG The registered company address is: Gewerbestrasse 11, 6330 Cham, Switzerland
Foreword
On reading this book a reader will certainly be astonished by the great age and importance of the observations on the biological role of clays. This empirically established knowledge, as that reported to us thanks to an expert author of Arabic medicine of the Middle Ages, resulted in the development of a simple and inexpensive pharmacopeia. Facing the poverty of a great part of the world’s population and the crucial problem of hunger it is thus not surprising to see children eating clay. This “nutritional geophagia” certainy remained in many memories following the images broadcast in the media in the whole world showing Haitian populations making clay cookies. The astonishing multiplicity of clays will enable the readers of
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