Why do so many people struggle with chronic illness, fatigue, and health conditions that never seem to resolve despite endless medications and treatments? In The Two Causes of All Disease, functional medicine physician Dr. Derek Guillory reveals a startlingly simple but powerful truth: nearly all disease stems from just two root causes. Drawing on years of medical practice and personal experience, Dr. Guillory explains how deficiency and toxicity undermine health at the deepest level. He equips readers with the tools to target these root issues and restore the body's natural ability to heal instead of chasing symptoms. Whether you're battling fatigue, brain fog, or chronic disease, you'll discover practical steps to regain control of your health and your future. You'll discover how to: Break free from the cycle of treating symptoms without real progress; Discover practical lifestyle changes that support lasting healing; Recognise everyday triggers that quietly sabotage your health; Use science-backed strategies to restore your body's resilience; Boost your natural energy and mental clarity by restoring cellular function; Gain confidence in your ability to take charge of your health. If you're tired of short-term fixes and ready for lasting transformation, The Two Causes of All Disease will show you how to move beyond symptoms and reclaim your health.