"I have practiced medicine for over thirty years. One of the most important things I have learned is to identify the underlying cause of an illness. Only then can a proper treatment plan be implemented. The number one complaint I hear from my patients is that they are fatigued. America is exhausted. The vast majority of patients feels like their energy levels are depleted. Dr. Mercola's book, Your Guide to Cellular Health: Unlocking the Science of Longevity and Joy , identifies the root causes of fatigue and provides a pathway for patients to get their energy back. The mitochondria are our powerhouse cells responsible for producing the energy molecules--ATP--that fuel the body. For many, mitochondrial dysfunction is at the root cause of fatigue. Dr. Mercola lays out a 12-step holistic plan to restore the health to our mitochondria and how to maintain mitochondrial health. Healthy mitochondria can produce all the energy we need. Fatigue can be overcome through a holistic lifestyle. Your Guide to Cellular Health: Unlocking the Science of Longevity and Joy provides the plan for achieving your optimal health. This book is a must-read for those suffering from fatigue."