Switch On Your Brain by Dr. Caroline Leaf

According to researchers, the vast majority–a whopping 75-98 percent–of the illnesses that plague us today are a direct result of our thought life. What we think about truly affects us both physically and emotionally. In fact, fear alone triggers more than 1,400 known physical and chemical responses in our bodies, activating more than thirty different hormones! Today our culture is undergoing an epidemic of toxic thoughts that, left unchecked, create ideal conditions for illnesses.