Food, Genes, and Culture Eating Right for Your Origins

Vegan, low fat, low carb, slow carb: Every diet seems to promise a one-size-fits-all solution to health. But they ignore the diversity of human genes and how they interact with what we eat.In Food, Genes, and Culture, renowned ethnobotanist Gary Nabh

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food, genes, and

CULTURE eating right for your origins

Gary Paul Nabhan

Washington | Covelo | London

Copyright © 2004 and 2013 Gary Paul Nabhan All rights reserved under International and Pan-American Copyright Conventions. No part of this book may be reproduced in any form or by any means without permission in writing from the publisher: Island Press, 2000 M Street, NW, Suite 650, Washington, DC 20036. Island Press is a trademark of Island Press/The Center for Resource Economics. Library of Congress Cataloging-in-Publication Data Nabhan, Gary Paul. Food, genes, and culture : eating right for your origins / Gary Paul Nabhan. pages cm Includes bibliographical references and index. ISBN 978-1-61091-492-5 (pbk.) -- ISBN 1-61091-492-9 (paper) 1. Nutrition-Genetic aspects. 2. Food habits--History. 3. Human evolution. 4. Physical anthropology. I. Title. QP144.G45N33 2013 612.3--dc23 2013023650 British Cataloguing-in-Publication data available. Printed on recycled, acid-free paper Design by Kathleen Szawiola Manufactured in the United States of America 10 9 8 7 6 5 4 3 2 1

“Now killin’ folks and cookin’ ain’t so very far apart.” herbert h. knibbs from his poem/song “Boomer Johnson”

66666 Dedicated to the memory of Ted Nabhan, Sally Giff Pablo, and Gabriel Williams

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contents

one two

Foreword

ix

Introduction

1

Discerning the Histories Encoded in Our Bodies

15

Searching for the Ancestral Diet

36

Did Mitochondrial Eve and Java Man Feast on the Same Foods?

three four five

Finding a Bean for Your Genes and a Buffer Against Malaria

63

The Shaping and Shipping Away of Mediterranean Cuisines

92

Discovering Why Some Don’t Like It Hot

112

Is It a Matter of Taste?

six

Dealing with Migration Headaches

140

Should We Change Places, Diets, or Genes?

seven

Rooting Out the Causes of Disease

163

Why Diabetes Is So Common Among Desert Dwellers

eight

Reconnecting the Health of the People with the Health of the Land

186

How Hawaiians Are Curing Themselves Sources

211

Index

225

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foreword

i f t h e r e i s a m o r a l to this story, it is that we ignore the interactions among our genes, our ancestral and contemporary diets, and our environments (including their myriad microbes) at our own peril. But if there is hope in this same story, it is that once we open our eyes, mouths, and taste buds to these fascinating interactions, our world will be made richer and many problems can be averted. What kinds of problems? For starters, the human suffering triggered by the onset of diabetes, heart disease, food allergies, and many forms of diet-driven inf lammation. Over the long haul, we also need to check the decline of biodiversity which will impoverish us all, but particularly that of the place-based microbes in our food systems, from the bacteria in our garden’s soils to those in our guts. These diseases and degradations affect the quality of life of billions of people, yet they are often mislabeled if not misdiagnosed and attributed to the wrong causes. Take adult-onset or non-insulin dependent diabe