I’m not saying that at all. I’m saying that grouping people together based on their emotional state is not going to lead to any positive conclusion. Most emotional states are the result of our interaction with the environment. Anxiety is mostly caused by experience scary things, depression by hopeless experiences. Now anxiety can also be created by deprivation of oxygen or by taking a lot of stimulants, which are physiological causes, but the idea that there is ONE physiological cause of anxiety is just plain wrong. So what I’m objecting to is not the idea that biology can cause anxiety in some cases, but the idea that anxiety is all caused by the same thing every time, or that anxiety is even always a “disorder.” Anxiety is our body’s way of telling us that something scary is happening and we need to take action to remedy it. What it is that is scary can be very different, depending on the person and the situation. It is not a “mental illness” to be anxious. It may be an indicator of some other illness, but anxiety itself is not an illness. It’s a natural state of the body under stress.