"I would like to ask you directly, because you say that you do not make this distinction, whether you think that body/mind influence each other or that what happens on the mental/psychosomatic level in a person has an effect on the organism."

I observe that our mental state provably affects our physical body in some ways that almost everyone will agree is factual. When we are frightened we experience reflexive responses that are caused by our fear, the fight or flight hormonal response. I am utterly certain there are many more ways in which our mental state affects our physical bodies, but also certain that some believe things that are not true, such as the claim that if we believe and state we will become rich that the universe will conform to that statement, something I think is referred to as the law of attraction. I have read very strong beliefs in such mechanism and find them without factual basis and utterly irrational.

I note that the range of beliefs regarding to what extent our minds affect physical reality far exceeds what can be demonstrated experimentally, and is the reason I seek to restrain myself to discussion that can be based on evidence that enables reasonable people to agree, rather than all but compelling people to disagree on matters such that we cannot work together at all because we are focused on our disagreements instead of our agreements.