Dr. Robert Greene's Perfect Balance: Look Younger, Stay Sexy, and Feel Great

Overview

In this breakthrough book, world-renowned hormone specialist Dr. Robert Greene explores the connection between two of the least understood—and yet most important—physiological factors: hormones and the brain. In Perfect Balance, Dr. Greene presents a comprehensive program for reaching hormonal balance, including how to:

•craft a personalized hormone therapy program that’s unique to your body and your symptoms

•avoid forgetfulness, moodiness, sexual dysfunction, and even the advance and progression of Alzheimer’s ...

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Overview

In this breakthrough book, world-renowned hormone specialist Dr. Robert Greene explores the connection between two of the least understood—and yet most important—physiological factors: hormones and the brain. In Perfect Balance, Dr. Greene presents a comprehensive program for reaching hormonal balance, including how to:

•craft a personalized hormone therapy program that’s unique to your body and your symptoms

•avoid forgetfulness, moodiness, sexual dysfunction, and even the advance and progression of Alzheimer’s disease

•understand the pros and cons of the latest cutting-edge hormone therapies

•establish your individual hormone profile, gauge your progress, and determine when and how to target lingering problems

•recognize “good” and “bad” estrogen—and how to balance the two types

•troubleshoot your symptoms, including migraines, hot flashes, sleeplessness, and depression

•implement the Perfect Balance Diet and Exercise Program, designed for optimal hormonal health

Dr. Greene explains that hormones play a role in every aspect of your health, from quality-of-life issues to the onset of certain diseases, and he shows how righting your hormonal balance can bring about sweeping improvements to your overall health. Sure to become a trusted resource, Perfect Balance is the most groundbreaking book on women’s health in decades.

From the Hardcover edition.

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Editorial Reviews

From the Publisher
“Finally a doctor who ‘gets it.’ This book is a must-read.” —Suzanne Somers

“Dr. Greene’s book tackles the complex interface between the brain and hormones and breaks down complicated subjects to the essential points. At the same time, this book is chock-full of pearls.” —David Ko, MD, chief of neurology, Los Angeles County and University of Southern California Medical Center

“At a time when women are thoroughly confused about hormone therapy, this book is a beacon of light on the subject.” —Pouru Bhiwandi, MD, FACOG, MSPH; adjunct professor of maternal and child health, University of North Carolina; international consultant in women’s health

“Every doctor who takes care of women, and women of every age, need this book.” —Ricki Pollycove, MD, MHS; fellow of the American College of Ob-Gyn

Perfect Balance is a remarkable achievement and a breakthrough in thinking and medical practice.” —David Feldman, MD, associate clinical professor of obstetrics and gynecology, University of California, San Francisco–Fresno

“This book is sure to be a guiding light for women everywhere.” —Dr. Jeanne Leventhal Alexander, founder and president of the Alexander Foundation for Women’s Health

From the Hardcover edition.

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Product Details

  • ISBN-13: 9780307336200
  • Publisher: Crown Publishing Group
  • Publication date: 5/2/2006
  • Edition description: Reprint
  • Pages: 368
  • Product dimensions: 5.98 (w) x 9.15 (h) x 0.84 (d)

Meet the Author

Robert A. Greene, M.D. is one of the country’s leading hormone specialists, a world-renowned brain researcher, and founder of Specialty Care for Women, a medical clinic in Redding, California, specializing in women’s hormones. This is his first book.

Leah Feldon is a bestselling author, respected journalist, and cowriter of numerous health books, including the New York Times bestseller The Okinawa Program and its sequel, The Okinawa Diet Plan.

From the Hardcover edition.

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Read an Excerpt

Chapter one: The Hormone Revolution

Hormones are essentially chemicals secreted in tiny amounts by various glands and tissues in our body that circulate in the bloodstream and ultimately control numerous body functions that occur in cells and organs. While some have been much maligned for turning strong career women into weepy marshmallows and spunky teenagers into monosyllabic sulkers, they are hardly just the troublemakers they’re made out to be. Hormones are, in fact, absolutely essential. They tell us when we need to eat, sleep, drink, warm up, even when to have sex. They strengthen our bones, alert us to danger, and help keep our bodies and brains vital and fully functional—and that’s just for beginners. Hormones, in short, are crucial to our very existence. They are the ultimate coordinators, keeping all our bodily parts and functions regulated and directed toward the same purpose—whether that purpose is as basic as eating or as complicated as reproduction.

But powerful as they are, hormones don’t act on their own. They are in effect handmaidens of the brain, which is the commander in chief of all body operations. As hormones surge through our bloodstream, they’re delivering instructions, generated mainly by our brain, to cells in various sites in our body. (They also deliver information from cells to the brain.) They are the brain’s major intercommunication system for transmitting essential information from cells in one part of the body to cells in another. And there are a lot of them flowing through our body at any given time—we currently know of more than two hundred hormones, and we are constantly discovering more. Within the last ten years, scientists have discovered at least nineteen hormones that help establish and manage appetite and weight alone. And we’ve uncovered a few other surprises that have turned our old concept of hormones upside down and inside out.

NEW FINDINGS

We used to think that hormones were produced only by nine endocrine glands—the thyroid, parathyroid, pancreas, adrenals (2), gonads (2: ovaries and testes), pituitary, and pineal—and that the hormones these glands produced each had only one function. The ovaries and the testes, for example, were thought to be involved solely in reproduction; the adrenals were meant to regulate stress; the pituitary monitored growth; and so on. But over the last decade, we’ve discovered that hormones are not only produced by the endocrine system, but are, in fact, secreted by other parts of our body, as well. Hormones are released by the stomach, skin, bones, white blood cells, even our extra belly fat—in fact, almost every part of the body can produce some hormones. That makes for a lot of chemical messages running through our body and a lot of hormonal interaction. Contrary to old-school thinking, no hormone is an entity unto itself. Each one impacts the others, and that mutuality plays a huge role in the way you feel on a day-to-day basis. There are four major hormone groups in terms of function and what they do for you, and even though they cross over into other territories, these categories are their home ground:

Sex hormones (estrogen, testosterone, and progesterone) are the big guns—the hugely important hormones produced by your ovaries that we’ll be focusing on throughout the book. As a woman, the levels of your sex hormones shift more frequently and more dramatically than most of your other hormones, creating a delicate balancing act with one another and with every other hormone in your body. We’ve always known that the sex hormones influence reproductive status and define gender, but we’ve only recently discovered that they are much more all-encompassing than had been previously considered. The powerful effects of estrogen on the brain; the rather limited abilities of progesterone in areas other than the uterus; and testosterone’s ability to help build muscle, regulate sexuality, and act as a building block of estrogen coalesce to form a fragile relationship that has a tremendous impact on your mental, physical, and emotional well-being. Sex hormones are, in fact, largely responsible for establishing and maintaining a considerable part of adult functioning.

The metabolic hormones (aka energy hormones): This group, which targets all metabolic processes and monitors and regulates our physiology, includes the thyroid hormones, insulin, growth hormone (GH), and many others. Their job is to regulate how we use our calories—the ones from our most recent meal as well as the ones we’ve stored as fat. They decide if we need to store our calories, use them to build more tissue, or burn them to keep warm. And they ensure our health and survival by monitoring our need for energy.

Regulatory hormones: These hormones (aldosterone, melatonin, parathyroid hormone, and others) help us maintain body temperature, regulate the amount of urine we produce, adjust to changes in time zones, and monitor the amount of oxygen in our blood. They’re the hormones that control how we function in environments ranging from frozen mountain peaks to sweltering deserts. When they’re out of balance, they can cause bloating, insomnia, fatigue, sweats, and more.

Stress hormones: which include cortisol, epinephrine, and norephinephrine, among others, are produced mainly in the brain and adrenal glands and serve as our body’s alert system. They fire up when something is threatening our health or survival (this includes our need for food and water, temperature stability, and general well-being). When stress hormone levels are briefly elevated, they promote memory formation, motivation, and energy production. When they’re chronically elevated, on the other hand—a situation that’s increasingly common in our fast-paced, multitasking world—they can become toxic and adversely affect our emotional state, memory, and even sleep patterns.

HORMONE EQUILIBRIUM

All these hormones operate in your system like a finely balanced mobile. Just as every part of a mobile is interconnected and shifts when one section moves, each of your hormones is interrelated to the others, and a shift in the level of one will invariably affect the level of another, as well as the overall balance of your system. There’s a constant breeze moving the mobile pieces, too—the environment. (Toxic chemicals in our food, water, and air can disrupt the natural rhythm of our hormones.) When your personal “hormonal mobile” is well balanced, you feel your best and your health flourishes. When the pieces are tilting too much one way or the other, you get symptoms of hormonal imbalance like sexual dysfunction, mood and sleep disorders, and cognitive problems. And when the mobile is severely askew, serious problems, disorders, and diseases are likely to set in.

THE INTRICATE INTERWEAVING OF HORMONES

The sex hormones are in the center of a woman’s hormone mobile because they play the central role in her hormone balance. Aside from their role in reproduction, they provide key functions within each of the other hormone categories. Testosterone, for example, fulfills an energy hormone role by stimulating muscle growth, which helps a woman’s body burn more calories. And when estrogen levels are high, they can promote fluid retention, even though fluid balance is technically a regulatory hormone function. It’s these kinds of crossovers that make sex hormones so powerful and their balance so vitally important. And because these interhormonal relationships are hugely variable and complex, sex hormone imbalances can manifest as symptoms that may appear to have nothing at all to do with the sex hormones themselves. Estrogen, progesterone, and testosterone play multifaceted roles in mood status (anxiety and depression), temperature changes (hot flashes and night sweats), appetite (cravings), sleep (insomnia), and other regulatory functions.

A good example of one abnormal hormone level causing an imbalance with others is polycystic ovarian syndrome (PCOS), a common disorder (it affects at least one in ten reproductive-age women) that’s usually caused by an abnormally high level of the hormone insulin. Typical symptoms of PCOS are weight gain, acne, excess hair growth, and irregular menstrual cycles. The latest evidence suggests that the high insulin levels actually cause the ovaries to produce excessive testosterone. Once the insulin problem is treated, the other hormonal imbalances often self-correct without additional treatment.

Another classic example of hormone interdependence is when one hormone prevents the message of another hormone from getting properly delivered to the brain. This block deprives you of a particular hormone and triggers an imbalance. Too much estrone (the “bad” estrogen), for instance, can block estradiol (the symptom-relieving “good” estrogen) from entering a cell, effectively producing symptoms of estradiol depletion like hot flashes (more about that on page 223ff.). When hormones multitask successfully, all systems run smoothly. It’s only when they fail—when your body has exhausted its ability to increase production of a diminished hormone or convert enough of one hormone into another—that your brain sends you a warning sign in the form of a symptom. Those “whispers” are hormonal messages transmitted by the brain to let you know that you’ve got a hormonal imbalance—and that you should do something about it.

We actually experience minor brain-hormone alerts on a daily basis. Take perspiration, for example. When it’s hot, a reflex initiates perspiration to produce a cooling effect. That in turn results in bodily water loss. Since your health is dependent on maintaining a balance between water and temperature, if you perspire excessively, your brain, which is always monitoring water loss, initiates action to reduce the risk of dehydration. It sends a hormonal message in the form of antidiuretic hormone (ADH) to your kidneys to slow urine production, which reduces water loss. If you keep sweating, another alert is eventually triggered—thirst. That, of course, motivates you to drink and replace the lost fluid. Drinking means you listened to the whisper and took action. Your brain acknowledges your response by quieting that whisper.

The bottom line is this: When all your hormones are in sync and in balance with themselves and other hormones, you feel your best—you think more clearly, move more fluidly, and have more energy. When they’re not, you can experience all sorts of problems, some profound, others that manifest more as a general malaise. You may not feel horrible or sick, but you just don’t feel great. Unfortunately, because subtle symptoms of hormonal imbalance are hard to articulate or even consciously acknowledge, many imbalances go unrecognized and untreated. Learning how to recognize symptoms of imbalance and alleviate them is one of the goals of this book. Let’s start by taking a closer look at each of the sex hormones and examining just how they’re able to exert such a powerful influence on your life.

THE SEX HORMONES

Your sex hormones (estrogen, testosterone, and progesterone) are produced mainly in your ovaries and to a lesser degree in other organs and tissues, such as your adrenal glands and body fat. From a chemical standpoint, they’re steroid hormones, which means they’re produced at a slow, regular rate, have a more lingering effect on their target organs, and are oil-soluble. (More about the importance of that in a minute.) Sex hormones are also built from one another—that is, by simply binding to the right enzymes, one hormone can become another. That’s an important aspect, because it’s what makes it possible for one sex hormone to be converted into another, which helps them remain balanced and allows cells to function even when the levels of a particular hormone are low. Your brain constantly monitors your hormone levels and sends a signal to convert one hormone to another when it decides the conversion is necessary.

ESTROGEN: MOST VALUABLE PLAYER

Estrogen is actually a group of three hormones: estradiol (which you produce in your reproductive years), estriol (which is produced only during pregnancy), and estrone (the dominant estrogen of menopause). Of the three, estradiol is by far the most important because of its sweeping effects on your brain and body. It’s the one that most people are referring to when they talk about estrogen per se, and the only estrogen that impacts your brain. (Throughout the book I will be referring to estradiol whenever I use the term estrogen.)

ESTRADIOL: THE “GOOD” ESTROGEN

Although estradiol is produced in the smallest amounts of all the sex hormones, it fulfills more functions in your system than any other hormone. It controls, monitors, or modifies well over 300 bodily needs—that’s ten times more tasks than those of most other hormones! The only other hormone that comes even close in terms of importance is testosterone—and it contributes to only about 110 functions. Estradiol (which is produced solely in your ovaries) promotes neuron growth and causes positive mood changes, healthy sexual lubrication, and normal sleep patterns. It hardens bones, dilates blood vessels, and keeps your skin wrinkle resistant. In addition, it improves your sense of smell, keeps your hearing sharp, and helps you maintain your balance and coordination. In short, it has a huge effect on your brain and entire well-being.

One of the truly momentous effects of estradiol is that it slows brain aging by stimulating nerve growth, functioning, and healing. And it’s one of the most powerful antioxidants that the body produces—twice as potent as vitamins E and C combined. In fact, we now think that one of the reasons women age more rapidly after the onset of menopause is that they lose the antioxidant properties of estradiol. Estradiol’s antioxidant abilities allow it to diminish the production of cell-damaging free radicals, which are essentially unstable molecules that accelerate the aging process; increase the risk of heart attack, stroke, and blood clots in the legs (deep vein thrombosis); and contribute to dementia and other brain diseases.

ESTRONE: THE “BAD” ESTROGEN

Although it’s relatively harmless in normal quantities, large amounts of estrone in your body can inhibit the abilities of estradiol. The excess estrone effectively blocks estradiol from binding to the cell receptors and renders the estradiol ineffective. This deprives the brain—and you—of estradiol’s formidable benefits. (When one hormone crowds out another like this, it’s referred to as a competitive inhibitor.) Obesity-related symptoms such as blood clots, heat intolerance, and sweating are often a result not so much of estradiol deficiency as of an imbalance caused by too much estrone preventing estradiol from doing its job. Because excess quantities of estrone stimulate the liver, it can also cause gallstones, and because it promotes ongoing endometrial cell division, it increases the risk of vaginal bleeding and endometrial cancers.

Estrone is associated largely with menopause and is often the dominant estrogen in obese women. This is because estrone is made primarily by fat cells, and in aging women the fat cells continue to produce this weak estrogen long after the ovaries stop making estradiol. Because estrone doesn’t have nearly the potency of estradiol, it can’t help much in terms of relieving brain-related hormonal symptoms like hot flashes, mood disorders, and sexual dysfunction. In truth, estrone’s only major value is that it can be converted into estradiol.

ESTRIOL: THE ESTROGEN OF PREGNANCY

Estriol is the least potent and certainly the most limited of the estrogens. Its activity as an estrogen is about a thousand times less useful than estradiol. That’s because the only time it circulates in your body is during pregnancy. Estriol is, in effect, a waste product; it’s your body’s way of getting rid of some of the excess estradiol you produce during pregnancy. (Pregnancy is the only time you actually produce excess amounts of estradiol; most of the time it’s too little, not too much, that’s the problem.)

From the Hardcover edition.

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