"Like your heart, your immune system is also neurologically sensitive to your thought life. When your immune system faces attack, which it does when your thought life is toxic, it generates blood proteins called cytokines, which are known to produce fatigue + depression... toxic thoughts and the emotions they generate interfere with body's natural healing process.
Your thoughts can de-stress you, making you more clever, calm and in control of your emotions, or they can do just the opposite! The choice is yours."
Really enjoyed this book and she goes through 12 steps to detox your thought life.
~ Who switched off my brain? Dr Caroline Leaf