You feel fatigued. Your thyroid tests seem to be out of range. Why does your doctor say they are normal? Why does your doctor refuse to prescribe certain medicines or order certain tests? Why do you still feel fatigued after taking bunch off supplements? Why do you get tired and sleepy and crave for sweets in the afternoons? If you like to know the answers, you want to read this book.

In a typical endocrine practice at least one third of the patients complain of tiredness or fatigue. Unfortunately doctors don't always spend enough time to evaluate these complaints in detail because of the relatively short time allowed for medical appointments. I wrote this book to make up for these missed opportunities, and provide unbiased, useful and practical information for our patients. In this book I will share my knowledge and experience and most recent medical developments as clearly as I can.

To make the best use of your time, I organized a good portion of the book in question-and answer format. These are the questions I get from my patients all the time and therefore I suspect you have them too. I included figures to make my explanations clear and simple. In addition, I summarized the most important and useful information at the end of each section. You may want to first look at these summaries, and then read the parts which interest you in detail.

I believe that after reading this book you will understand how your endocrine glands and hormones work. You will decipher your test results. You will feel comfortable about discussing treatment options with your doctor. You will also make lifestyle choices that can improve your energy and stamina.

However, this book does not intend to provide medical advice. You need to work with your doctor for a treatment that takes into account your full health profile. My goal is to help you to gain knowledge and control, feel stronger and more energetic, and live your best life.