This book examines the possible causes of diseases and ways to get rid of them from the perspective of the Reasonable Path. The starting premise is that everything we have in our lives, we create ourselves, with our thoughts, emotions and actions. Since health is given to us from birth as a free resource, we are not used to appreciating it. When the body can no longer tolerate our disregard for it, it begins to object - through illness. Since a person is a multidimensional being, the cause of the disease can lie at completely different levels - at the level of the physical body, in its energy matrix, in the sphere of emotions or in the mental sphere. To be a healthy person, you need to be clean and healthy on all levels. The book discusses ways in which this can be achieved.