I also think that for a traumatized person, it probably doesn't make that much of a difference whether or not their body is different because of the trauma, or they're traumatized because of their body - they are experiencing these reactions and trauma responses, and they're looking for a solution. Somatic experiences might help them.
To be honest, reading the book was more helpful than critiquing whether or not my testosterone levels were too low as a 11-year-old, or if I had elevated inflammation because of my diet. Perhaps I'm biased.