No, its very reliable after consideration for how anxiety works from a physiological perspective and what does to a person's health and how modifies their decisions and behaviors. When all these factors are taken into account anxiety alone may account for most other more directly measured mortality conditions.

The other side of that coin is that anxiety is also most prominently the result of social conditioning as opposed to diagnosed illness. This results in anti-anxiety medications that are vastly over-prescribed for individuals that receive less than ideal benefits.