Is it true that all diseases are caused by stress?

In the scientific literature today you can find the term "psychosomatic scenario of the disease." This is a combination of psycho-emotional traumas that make a person sick. From the point of view of psychosomatics, diseases of the physical body are a kind of adaptation to the experiences and stresses that you experience. Stress triggers changes in the nervous system that provoke changes in various organs and tissues. The body begins to react to any changes that occur to your psyche: if they are positive, then your body works without failures, if they are considered stress factors, then exacerbations of chronic diseases or the debut of new ones are provoked. From the point of view of psychosomatics, all diseases in one way or another stem from stress.