The book is divided into three sections and gives a vivid history of the use light in different medical therapies. Mansukh Patel mentions the “Light Institute” in Denmark, which was opened by a doctor who used sunlight to treat tuberculosis patients. Scientific research also shows that the major control centres in the body are directly stimulated by light entering via the eyes. Light has a natural frequency, which means it is vibrating at a certain wavelength. It pierces right through the body, whether you want it or not. This really is the good news. Patel explains that cells in the body who are damaged will be brought into harmonic alignment as soon as a concentrated beam of light comes in.