Your own immune system is your best defense against colds and viruses. Learn how you can help your immune system to become stronger. A healthy immune system has been shown by scientific research to help prevent most diseases and even most types of cancer. This book will allow you to: • Identify deficiencies that weaken your immune system • Understand why these deficiencies exist • Rate the effects these deficiencies can have on your health • Learn how to correct these deficiencies • Maximize your overall disease resistance • Have fewer colds, flu, or other viruses each year • Minimize your symptoms if you do catch a cold or virus • Enjoy better long-term health, with fewer doctor visits.