Touchstone
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This publication contains the opinions and ideas of its author. It is intended to provide helpful and informative material on the subjects addressed in the publication. It is sold with the understanding that the author and publisher are not engaged in rendering medical, health, or any other kind of personal professional services in the book. The reader should consult his or her medical, health or other competent professional before adopting any of the suggestions in this book or drawing inferences from it.
Copyright © 2015 by Henry Emmons, MD, and David Alter, PhD
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First Touchstone hardcover edition September 2015
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Interior design by Jill Putorti
Jacket design and illustration by Jonathan Bush
Library of Congress Cataloging-in-Publication Data
Emmons, Henry.
Staying sharp : 9 keys for a youthful brain through modern science and ancient wisdom / Henry Emmons, MD And David Alter, PhD.
pages cm
“A Touchstone Book.”
1. Brain—Care and hygiene. I. Alter, David. II. Title.
QP376.E584 2015
612.8’2—dc23
ISBN 978-1-4767-5894-7
ISBN 978-1-4767-5895-4 (ebook)