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Eat, Drink, and Be Healthy
The Harvard Medical School Guide to Healthy
Eating
By Walter
Willett, M.D.
With P.J.
Skerrett
This updated edition of the national bestseller
debunks dietary myths and presents Dr. Willett's
New Healthy Eating Pyramid, a healthier guide
to nutrition than the recently revised USDA pyramid.
Testimonials
Table of contents
Chapter One:
Introduction
Inside you'll discover:
- eye-opening new research on the healthiest
carbohydrates, fats, and proteins
- why weight control is still the single most
important factor
- menu plans and brand-new recipes that make
it even easier to reinvent your diet
Millions of Americans concerned about healthy
eating take their cues from the U.S. Department
of Agriculture's Food Guide Pyramid. "That's
a shame," says renowned health researcher
Dr. Walter C. Willett, "because the USDA
Pyramid is wrong... It's wrong because it ignores the
evidence that's been carefully assembled over
the past 40 years... Indeed, it actually steers
you away from foods that can improve your long-term
health."
Drawing on the latest nutrition research, Dr.
Willett has written Eat, Drink, and Be Healthy as
an alternative - and antidote - to the flawed new
USDA Pyramid. Willett cogently explains how proper
nutrition contributes to better health and longer
life. The book describes exciting new work on
the cardiovascular benefits of n-3 fatty acids,
which are found in nuts and some oils; on the
cancer-fighting substance lycopene, found in
tomatoes; on the potential hazards of consuming
too much calcium; and on the value of a daily
multivitamin. In addition, it features a full
range of recipes by dietitian and food writer
Maureen Callahan.
Testimonials
"Finally, we can step away from the hype
and confusion of fad diets and turn instead to
a solidly researched guide we know we can trust...
Throw away your other volumes; this is all you'll
need."
-- Mollie Katzen, author of The Moosewood
Cookbook
"Eat, Drink, and Be Healthy is
the best book on nutrition for the general public
I have read to date. Dr. Willett is not afraid...to
criticize some sacred cows -- including the USDA's
food pyramid. I urge you to buy this book and
read it for yourself; it will be well worth your
time."
-- Timothy Johnson, M.D., M.P.H., medical editor,
ABC News
”Finally, a commonsense, science-based
book on nutrition that you can trust!"
-- Susan Love, author of Dr. Susan Love's
Breast Book and Dr. Susan Love's Hormone
Book
Walter C. Willett, M.D., is chair of the Department
of Nutrition at Harvard School of Public Health
and a professor of medicine at Harvard Medical
School.
Eat, Drink, and Be Healthy (Free Press)
is available wherever books are sold

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Table
of Contents
- Acknowledgments
- Preface
- CHAPTER ONE Introduction
- CHAPTER TWO What Can You Believe About Diet?
- CHAPTER THREE Healthy Weight
- CHAPTER FOUR Surprising News About Fat
- CHAPTER FIVE Carbohydrates for Better and
Worse
- CHAPTER SIX Choose Healthier Sources of Protein
- CHAPTER SEVEN Eat Plenty of Fruits and Vegetables
- CHAPTER EIGHT You Are What You Drink
- CHAPTER NINE Calcium: No Emergency
- CHAPTER TEN Take a Multivitamin for Insurance
- CHAPTER ELEVEN Summary
- CHAPTER TWELVE Recipes and Menus
- Credits
- Further Reading
- General Index
- Recipe Index

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Chapter
One: Introduction
We eat to live.
It's a simple, obvious truth. We need food for
the basics of everyday life -- to pump blood,
move muscles, think thoughts.
But we can also eat to live well and live longer.
By making the right choices, you will help yourself
avoid some of the things we think of as the inevitable
penalties of getting older. A healthy diet teamed
up with regular exercise and no smoking can eliminate
80 percent of heart disease and 70 percent of
some cancers. Making poor choices -- eating too
much of the wrong kinds of food and too little
of the right kinds, or too much food altogether
-- increases your chances of developing cancer,
heart disease, diabetes, digestive disorders,
and aging-related loss of vision. An unhealthy
diet during pregnancy can even cause some birth
defects.
Separating what's good from what's bad can be
a discouraging task. Each day you have to choose
from an ever increasing number of foods and products,
some good, most not so good. Maybe the time you
have to prepare food, or even to eat, seems to
shrink by the month. To make matters worse, you
may feel overwhelmed by contradictory advice
on what to eat. Your daily newspaper or TV newscast
routinely serves up results from the latest nutrition
studies. Magazines trumpet the hottest diets
complete with heartfelt testimonials. One new
diet or nutrition book hits the bookshelves every
other day. Even supermarkets and fast-food restaurants
offer advice, as do cereal boxes and a sea of
Internet sites. This jumble of information quickly
turns into nutritional white noise that many
people tune out.
TURNING TO THE USDA PYRAMID IS A MISTAKE
For no-nonsense, rock-solid nutrition information,
people often look to the Food Guide Pyramid developed
by the U.S. Department of Agriculture (USDA).
It is supposed to offer straight talk that rises
above the jungle of misinformation and contradictory
claims.
That's a shame, because the USDA Pyramid is
wrong. It was built on shaky scientific ground
back in 1992. Since then it has been steadily
eroded by new research from all parts of the
globe. Scores of large and small research projects
have chipped away at the foundation (carbohydrates),
the middle (meat and milk), and the apex (fats).
The Dietary Guidelines for Americans, which are
supposed to serve as the detailed blueprint for
the USDA Pyramid, are a bit better. They are
updated every five years and sometimes include
ready-for-prime-time research. But the USDA Pyramid
hasn't really changed in spite of important advances
in what we know about nutrition and health.
At best, the USDA Pyramid offers wishy-washy,
scientifically unfounded advice on an absolutely
vital topic -- what to eat. At worst, the misinformation
contributes to overweight, poor health, and unnecessary
early deaths. In either case it stands as a missed
opportunity to improve the health of millions
of people.
REBUILDING THE FOOD PYRAMID
I wrote this book to show you where the USDA
Pyramid is wrong and why it is wrong. I wanted
to offer a new healthy eating guide based on
the best scientific evidence, a guide that fixes
the fundamental flaws of the USDA Pyramid and
helps you make better choices about what you
eat. I also wanted to give you the latest information
on new discoveries that should have profound
effects on our eating patterns.
The Healthy Eating Pyramid is just as simple
as the USDA Food Guide Pyramid. You don't have
to weigh your food or tally up fat grams. There
are no complicated food exchange tables to follow.
You needn't eat odd combinations of foods or
religiously avoid a particular type of food.
Instead, our pyramid aims to nudge you toward
eating mostly familiar foods that have been shown
to improve health and reduce the risk of chronic
disease. It involves simple changes you can make
one at a time. Because it's an eating strategy
aimed at improving your health instead of a diet
aimed solely at helping you shed pounds, and
because the changes suggested in this book can
make your meals and snacks tastier, it is something
you can stick with for years.
The Healthy Eating Pyramid isn't a single cute
idea dolled up in a catchy graphic. It is the
distillation of evidence from many different
lines of research. This shouldn't be an important
point, but it is. Few of the diets used by millions
of Americans today are built on this kind of
solid evidence. That was certainly clear from
the "Great Nutrition Debate" sponsored
by the USDA in February 2000. It brought together
several authors of best-selling diet books for
a lively, but mostly evidence-free, food fight.
The wildly different recommendations presented
in that three-hour session -- eat lots of meat,
don't eat any meat, eat lots of carbohydrates,
don't eat any carbohydrates, cut your intake
of fat to under 20 percent of calories, eat as
much fat as you want, stay away from sugar, eat
potatoes -- neatly captured the chaos that we
get in place of sound, sensible, and solid advice
on healthy eating. This jumble of contradictions
prompted USDA undersecretary Shirley Watkins
to say afterward, "We will stand behind
the Pyramid." But the USDA Pyramid isn't
much better than most of these unsubstantiated
diets!
THE HOLES IN THE USDA PYRAMID
Some recommendations on diet and nutrition are
misguided because they are based on inadequate
or incomplete information. Not the USDA Pyramid.
It is wrong because it ignores the evidence
that has been carefully assembled over the past
forty years. Here are the USDA Pyramid's main
and most health-damaging faults:
• All fats are bad. There's no
question that two types of fat -- saturated fat,
the kind that's abundant in whole milk or red
meat, and trans fats, which are found in many
margarines and vegetable shortenings -- contribute
to the artery-clogging process that leads to
heart disease, stroke, and other problems. But
the USDA Pyramid's recommendation to use fats "sparingly" ignores
the fact that two other kinds of fat -- the monounsaturated
and polyunsaturated fats found in olive oil and
other vegetable oils, nuts, whole grains, other
plant products, and fish -- are good for your
heart.
• All "complex" carbohydrates
are good. Carbohydrates form the base
of the USDA Pyramid. It suggests six to eleven
servings of bread, cereal, rice, and pasta
a day. But as with fats, this advice is too
simplistic and overlooks essential research
showing that the types of carbohydrates you
eat matters a lot.
Most dietary guidelines recommend limiting simple
carbohydrates (sugars) and eating plenty of complex
carbohydrates (starches). White bread, potatoes,
pasta, and white rice all fit this description
and are the main sources of carbohydrates in
the American diet. While the terms simple and complex have
a specific chemical meaning, they don't mean
much inside your body. In fact, your digestive
system turns white bread, a baked potato, or
white rice into glucose and pumps this sugar
into the bloodstream almost as fast as it delivers
the sugar in a cocktail of pure glucose. Swift,
high spikes in blood sugar are followed by similar
surges in insulin. As all this insulin forces
glucose into muscle and fat cells, blood sugar
levels plummet, triggering the unmistakable signals
of hunger. To make matters worse, these high
levels of blood sugar and insulin surges are
now implicated as part of the perilous pathway
to heart disease and diabetes. The harmful effects
of these rapidly digested carbohydrates are especially
serious for people who are overweight.
The carbohydrates that should form
the keystones of a healthy diet come from whole
grains, like brown rice or oats, from foods made
with whole grains, like whole-wheat pasta or
bread, or from beans. Your body takes longer
to digest these carbohydrate packages, especially
when they are coarsely ground or intact. That
means they have a slow, low, and steady effect
on blood sugar and insulin levels, which protects
against heart disease and diabetes. They make
you feel full longer and so keep you from getting
hungry right away. They also give you important
fiber plus plenty of vitamins and minerals.
The central message in the USDA Pyramid is that
you should feel good about eating carbohydrates,
especially if you are eating them in place of
fats. But if you eat too much of the wrong kinds
of carbohydrates and too little of the good kinds
of fats, you can set yourself up for the same
problems you may be trying to solve.
• Protein is protein. The protein
group occupies one of the upper chambers of the
USDA Pyramid. You need this type of nutrient
every day and can get it from a variety of sources.
The USDA Pyramid serves up as equals red meat,
poultry, fish, eggs, beans, and nuts. All are
excellent sources of protein. But red meat is
a poor protein package because of all the saturated
fat and cholesterol that come along. Red meat
may also give you too much iron in a form you
absorb whether you need it or not. Chicken and
turkey give you less saturated fat. The same
is true for fish, which delivers some important
unsaturated fats as well. As protein sources,
beans and nuts have some advantages over animal
sources. They give you fiber, vitamins, minerals,
and healthy unsaturated fats. Like fruits and
vegetables, they also give you a host of phytochemicals,
an ever expanding collection of plant products
that help protect you from a variety of chronic
diseases.
• Dairy products are essential. The
USDA Pyramid includes two to three servings of
dairy products a day. It's a message that the
hip "Got Milk?" and even hipper "milk
mustache" ads (all sponsored by the dairy
industry) hammer home to every possible demographic
group. As a prime source of calcium, dairy products
have been enlisted to fight the so-called calcium
emergency that is threatening Americans' bones.
Only there isn't a calcium emergency. Americans
get more calcium than the residents of almost
every other country except Holland and the Scandinavian
countries. And despite plenty of urgent public
service announcements, there's little evidence
that getting high amounts of calcium prevents
broken bones in old age. Further complicating
the issue are some studies suggesting that drinking
or eating a lot of dairy products may increase
a woman's chances of developing ovarian cancer
or a man's chances of developing prostate cancer.
If you need extra calcium, there are
cheaper, easier, and healthier ways to get it
than dairy products. Whole-milk dairy products
are loaded with the kind of saturated fat that
is most powerful at raising cholesterol levels.
One percent and skim milk are clearly better
choices. Spinach, broccoli, tofu, and calcium-fortified
orange juice and breakfast cereals are good sources
of calcium and have other advantages -- they
are lower in unhealthy fat than most dairy products,
and they give you many extra nutrients. Finally,
dairy products are an expensive way to get calcium.
Calcium supplements or calcium-based antacids
cost pennies a day (and they are mostly calorie-free,
to boot) compared with up to a dollar a day for
two to three servings of dairy products.
• Eat your potatoes. According
to the USDA, the average American eats 140 pounds
of potatoes a year, making the spud the most
popular vegetable in America. It is one of the
few vegetables to be mentioned by name in the
Dietary Guidelines -- except it shouldn't be
classified as a vegetable. Potatoes are mostly
starch -- easily digested starch at that -- and
so should be part of the carbohydrate group.
While more than two hundred studies have shown
that people who eat plenty of fruits and vegetables
decrease their chances of having heart attacks
or strokes, of developing a variety of cancers,
or of suffering from constipation or other digestive
problems, the same body of evidence shows that
potatoes don't contribute to this benefit.
Nutritionists and diet books alike often call
potatoes a "perfect food." But while
eating potatoes on a daily basis may be fine
for lean people who exercise a lot or who do
regular manual labor, for everyone else potatoes
should be an occasional food consumed in modest
amounts, not a daily vegetable. The venerable
baked potato increases levels of blood sugar
and insulin more quickly and to higher levels
than an equal amount of calories from pure table
sugar. French fries as they are usually sold
do much the same thing, while also typically
packing an unhealthy wallop of trans fats.
• No guidance on weight, exercise,
alcohol, and vitamins. Like the Sphinx,
the USDA Pyramid is silent on four things you
need to know about -- the importance of not
gaining weight, the necessity of daily exercise,
the potential health benefits of a daily alcoholic
drink, and what you can gain by taking a daily
multivitamin.
HOW THE USDA PYRAMID GOT ITS SHAPE
In Rudyard Kipling's classic children's story,
the satiable Elephant's Child got its long trunk
in a terrific tug-of-war, with Crocodile clamped
on to its nose and Bi-Coloured-Python-Rock-Snake
wrapped around its legs. That's pretty much how
the USDA Pyramid got its structure -- yanked
this way and that by competing powerful interests,
few of which had your health as a central goal.
The thing to keep in mind about the USDA Pyramid
is that it comes from the Department of Agriculture,
the agency responsible for promoting American
agriculture, not from agencies established to
monitor and protect our health, like the Department
of Health and Human Services, or the National
Institutes of Health, or the Institute of Medicine.
And there's the root of the problem -- what's
good for some agricultural interests isn't necessarily
good for the people who eat their products. (This
schizophrenic split isn't unique to the USDA.
The Nuclear Regulatory Commission, for example,
is charged with the often contradictory tasks
of promoting nuclear power and regulating its
use.)
Serving two masters is tricky business, especially
when one of them includes persuasive and well-connected
representatives of the formidable meat, dairy,
and sugar industries. The end result of their
tug-of-war is a set of positive, feel-good, all-inclusive
recommendations that completely distort what
could be the single most important tool for improving
your health and the health of the nation.
THIS HEALTHY EATING PYRAMID IS BASED ON SCIENCE
You deserve more accurate, less biased, and
more helpful information than that found in the
USDA Pyramid. I have tried to collect exactly
that in the Healthy Eating Pyramid. Without question,
I have the advantage of starting with a lot more
information than the USDA Pyramid builders had
ten years ago. Equally important, I didn't have
to negotiate with any special-interest groups
when it came time to design this Pyramid.
The Healthy Eating Pyramid isn't set in stone.
I don't have all the answers, nor can I predict
what nutrition researchers will turn up in the
decade ahead. But I can give you a solid sense
of state-of-the-art healthy eating today and
point out where things are heading. This isn't
the only alternative to the USDA Food Guide Pyramid.
The Asian, Latin, Mediterranean, and vegetarian
pyramids promoted by Oldways Preservation and
Exchange Trust are also good, evidence-based
guides for healthy eating. But the Healthy Eating
Pyramid takes advantage of even more extensive
research and offers a broader guide that is not
based on a specific culture.
About the only thing that the Healthy Eating
Pyramid and the USDA Food Guide Pyramid share
is their emphasis on vegetables and fruits. Other
than that, they are different on almost every
level. In the chapters that follow, I will lay
out the evidence that shaped this blueprint for
healthy eating and will also chart out extra
information to help people with special nutritional
needs get the most benefit from what they eat.
These people include pregnant women, older people,
and people with, or at high risk of, heart disease,
diabetes, high cholesterol, high blood pressure,
and some other chronic conditions.
For now, though, the following list of the seven
healthiest changes you can make in your diet
offers an overview that describes how the Healthy
Eating Pyramid differs from the USDA Pyramid.
Topping the list is controlling your weight.
• Watch your weight. When it comes
to long-term health, keeping your weight from
creeping up on you is more important than the
exact ratio of fats to carbohydrates or the types
and amounts of antioxidants in your food. The
lower and more stable your weight, the lower
your chances of having or dying from a heart
attack, stroke, or other type of cardiovascular
disease; of developing high blood pressure, high
cholesterol, or diabetes; of being diagnosed
with postmenopausal breast cancer, cancer of
the endometrium, colon, or kidney; or of being
afflicted with some other chronic condition.
Yes, it is possible to be too thin, as in the
case of anorexia nervosa, but otherwise very
few American adults fall into this category.
• Eat fewer bad fats and more good
fats. One of the most striking differences
is the placement of healthy fats in the foundation
of the Healthy Eating Pyramid instead of relegating
all fats to the "Use Sparingly" spot
at the top. The message here is almost as simple
as the USDA's and far better for you: Fats
from nuts, seeds, grains, fish, and liquid
oils (including olive, canola, soybean, corn,
sunflower, peanut, and other vegetable oils)
are good for you, especially when you eat them
in place of saturated and trans fat.
The all-fat-is-bad message has started a huge
national experiment, with us as the guinea pigs.
As people cut back on fat, they usually eat more
carbohydrates. In America today, that means more
highly refined or easily digested foods like
sugar, white bread, white rice, and potatoes.
This switch usually fails to yield the hoped-for
weight loss or lower cholesterol levels. Instead
it often leads to weight gain and potentially
dangerous changes in blood fats -- lower high-density
lipoprotein (HDL), the so-called good or protective
cholesterol, and higher triglycerides (a major
type of blood fat).
Substituting unsaturated fats for saturated
fats, though, improves cholesterol levels across
the board. It may also protect the heart against
rhythm disturbances that can end in sudden death.
The bottom line is this: It is perfectly fine
to get more than 30 percent of your daily calories
from fats as long as most of those fats are
unsaturated. The Healthy Eating Pyramid
highlights the importance of keeping saturated
and trans fats to a minimum by putting red meat,
whole-milk dairy products, butter, and hydrogenated
vegetable oils in the "Use Sparingly" section
at the top.
• Eat fewer refined-grain carbohydrates
and more whole-grain carbohydrates. The
Healthy Eating Pyramid has two carbohydrate
building blocks -- whole grains that are slowly
digested as part of the foundation and highly
refined, rapidly digested carbohydrates at
the very top.
For almost twenty years our research team has
been one of several groups studying the health
effects of foods made from refined and intact
grains. The result of this work is compelling.
Eating lots of carbohydrates that are quickly
digested and absorbed increases levels of blood
sugar and insulin, raises levels of triglycerides,
and lowers levels of HDL cholesterol. Over the
long run, these changes lead to cardiovascular
disease and diabetes. In contrast, eating whole-grain
foods is clearly better for long-term good health
and offers protection against diabetes, heart
disease, cancer, and gastrointestinal problems
such as diverticulosis and constipation. Other
research around the world points to the same
conclusions.
• Choose healthier sources of proteins. In
the Healthy Eating Pyramid, red meat occupies
the pointy tip to highlight the fact that something about
red meat -- its particular combination of saturated
fats or the potentially cancer-causing compounds
that form when red meat is grilled or fried --
is connected to a variety of chronic diseases.
In this pyramid, the best sources of protein
are beans and nuts, along with fish, poultry,
and eggs. It separates vegetable and animal protein
sources and makes the latter optional for people
who want to follow a vegetarian diet.
• Eat plenty of vegetables and fruits,
but hold the potatoes. Vegetables and
fruits are essential ingredients in almost
every cuisine. If you let them play starring
roles in your diet, they will reward you with
many benefits besides great taste, terrific
textures, and welcome variety. A diet rich
in fruits and vegetables will lower your blood
pressure, decrease your chances of having a
heart attack or stroke, help protect you against
a variety of cancers, guard against constipation
and other gastrointestinal problems, and limit
your chances of developing aging-related problems
like cataracts and macular degeneration, the
most common causes of vision loss among people
over age sixty-five. I've plucked potatoes
out of the vegetable category and put them
in the "Use Sparingly" category because
of their dramatic effect on levels of blood
sugar and insulin.
• Use alcohol in moderation. When
the first reports appeared linking moderate alcohol
consumption with lower rates of heart disease,
many scientists thought that some other habit
shared by drinkers, not the drinking, accounted
for the benefit. Today the evidence strongly
points to alcohol itself. Based on the best estimates
available, one drink a day for women and one
or two a day for men cuts the chances of having
a heart attack or dying from heart disease by
about a third and also decreases the risk of
having a clot-caused (ischemic) stroke.
Like many drugs, alcohol's effects depend on
the dose. A little bit can be beneficial. A lot
can eventually destroy the liver, lead to various
cancers, boost blood pressure, trigger so-called
bleeding (hemorrhagic) strokes, progressively
weaken the heart muscle, scramble the brain,
harm unborn children, and damage lives.
The clear and ever present dangers of alcohol
and alcohol addiction make the recommendation
of moderate drinking a political hot potato.
While I acknowledge the problems with alcohol,
I think it is important to point out its possible
benefits for middle-aged and older people.
If you don't drink alcohol, you shouldn't feel
compelled to start. You can get similar benefits
by beginning to exercise (if you don't already)
or boosting the intensity and duration of your
physical activity, in addition to following the
eating strategy we describe. But if you are an
adult with no history of depression or alcoholism
who is at high risk for heart disease, a daily
alcoholic drink may help reduce that risk. This
is especially true for people with type 2 diabetes
or those with low HDL that just won't budge upward
with diet and exercise. If you already drink
alcohol, keep it moderate.
• Take a multivitamin for insurance. Several
of the ingredients in a standard multivitamin
-- especially vitamins B6 and B12, folic acid,
and vitamin D -- are essential players in preventing
heart disease, cancer, osteoporosis, and other
chronic diseases. At about a nickel a day, a
multivitamin is a cheap and effective genuine "life
insurance" policy. It won't make up for
the sins of an unhealthy diet, but it can fill
in the nutritional holes that can plague even
the most conscientious eaters. A daily multivitamin
is especially important for people who have trouble
absorbing vitamins from their food and for those
who can't, or don't, get out in the sun every
day. A daily multivitamin is also important for
people who drink alcohol because it provides
extra folic acid. Alcohol interferes with the
metabolism of this key vitamin.
USDA PYRAMID AND DIETARY GUIDELINES FAIL THE
HEALTH TEST
Throughout this book I will talk about "the
evidence." I hope I won't sound like an
old, scratched record, repeating that there is
or is not enough evidence on the benefits or
risks of this or that strategy. But the evidence
is what matters. Without it, recommendations
are little more than opinions and educated guesses,
and they may or may not accomplish what they
set out to do.
In the ten years since the USDA Pyramid was
designed and built, it has never been updated
to reflect the wealth of new information that's
become available on diet and health. Nor has
it ever been tested to see if it really works.
Until now.
A few years ago, the USDA's Center for Nutrition
Policy and Promotion devised a score sheet called
the Healthy Eating Index "to measure how
well American diets conform to recommended healthy
eating patterns." This index assigns scores
of 0 to 10 for each of ten dietary components.
Five come from the USDA Pyramid (number of daily
servings of grains, vegetables, fruits, meat,
and dairy products), and five come from the Dietary
Guidelines for Americans (total fat in the diet,
percentage of calories from saturated fat, cholesterol
intake, sodium intake, and variety of the diet).
A score of 100 would mean perfect adherence to
the USDA's recommendations, while a score of
0 would mean total disregard for them.
My colleagues and I used the government's Healthy
Eating Index to test whether people who follow
the recommendations laid out in the USDA Pyramid
are healthier than those who don't follow these
guidelines. They aren't. Among over 121,000 female
nurses who are participating in a long-term study
of diet you'll be hearing more about in later
chapters, those with the highest scores on the
Healthy Eating Index were no less likely to develop
a major illness or die than those with the lowest
scores over a twelve-year period. Women scoring
high on the Healthy Eating Index were only slightly
less likely to have a heart attack. The pattern
was similar for more than 50,000 male health
professionals participating in a separate long-term
study.
These dismal results shouldn't come as a surprise
since the USDA Pyramid ignores the extensive
body of evidence linking certain eating patterns
with long-term health. Instead they should be
a warning that the current USDA Pyramid won't
help you eat to live well or live longer.
To be fair, we are now in the process of testing
the Healthy Eating Pyramid. Because each of its
building blocks comes from the finest possible
quarry -- solid evidence amassed by researchers
from around the world -- it has already passed
the most important tests. I'm confident that
the findings from this research will show that
it can help keep you healthy.
WHAT'S IN THIS BOOK
Between the covers of this book is the latest
thinking about diet and health. To give you a
quick and easy guide, I distilled as much information
as possible into the Healthy Eating Pyramid.
But I also wanted you to see the blueprint --
the scientific evidence -- on which it is based.
This is detailed in chapters 3 through 11. Along
the way, I describe cutting-edge research that
may radically change healthy eating patterns,
including new information on the benefits of
n-3 fatty acids found in some oils and nuts;
on lycopene, a possible cancer-fighting substance
found in tomatoes; on the potential hazards of
getting too much calcium; and on why it makes
sense to take a daily multivitamin.
This book also helps you incorporate this information
into your snacks and meals with practical tips
on buying healthy foods and eating defensively
and a section that offers more than fifty tested,
tasty recipes.
This information isn't meant to take the place
of advice you get from your physician, especially
if you have a medical condition that requires
a specific diet. Instead I encourage you to talk
about your diet with your health care provider
or share what you've learned from this book with
her or him to make sure you are on the same wavelength.
Unfortunately, the pressures of modern medicine
and health care often make it difficult for clinicians
to spend time talking about healthy food choices
with their patients.

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