I read the book after a recommendation on this site in fact. It was eye opening to say the least how conditions like ADHD, PTSD, childhood trauma, anxiety and depression have both psychological and physiological effects. Some of which are surmountable (trauma in adult hood) whereas early childhood trauma can leave long term physical changes to the brain and body making it something that has to be managed.

The first 2/3 of the book is very illuminating the last 1/3 a little polemic on healthcare policy and funding.

Enlightening book all in all.