"You Are the Placebo" is a book by Dr. Joe Dispenza that explores the power of the mind in healing the body. It discusses how beliefs and thoughts can influence physical health, suggesting that individuals can harness their mental state to create positive changes in their well-being. The book presents scientific research and case studies that demonstrate the placebo effect, where patients experience real improvements in health after receiving a treatment with no therapeutic value. Dr. Dispenza encourages readers to tap into their own potential for self-healing by changing their mindset and beliefs.