However, my word of caution - he gives statistics on his patients who have adrenal and thyroid gland problems..... I was given the same diagnosis after my first visit, as well as a host of other problems were diagnosed. After great expense and an enormous amount of testing, none of the original diagnoses panned out ie. my health improved from the basics - diet/exercise and some supplements. If you consider doctors on a spectrum of those who test too little to those who test too much, Dr. Hedaya is definitely on the far extreme of testing a lot (as far as my own experience).
So my suggestion, is to follow the suggested diet and exercise as well as the supplements for at least 6-12 months before you spend thousands of dollars on a host of expensive tests. For myself, it took about 12-18 months to return to my normal weight, energy levels ....
I used some of the information in this book to inquire about getting tested for testosterone deficiency. Sure enough, my testosterone levels came back low in a formal blood test. Since, Ive been put on testosterone therapy by my internal medicine doctor. One thing the book doesnt go into though is the difference between secondary and primary testosterone deficiency. I think secondary testosterone deficiency is more common among depressed men and that sometimes requires a different treatment than just replacing testosterone directly. I owe that to this book, without reading this book I would never have thought of asking to get tested for low testosterone.
If there is a slight negative to the book, Hedaya doesn't really endorse St. John's Wort (but does includes fair reasons why there may be some concerns regarding its use and does mention a qualified distributor) or Sam-E (which I have read is fairly safe, and has passed some clinical scrutiny in the treatment of depression). Also, Hedaya doesn't appear to make any mention of 5-HTP (the modern-day tryptophan derivative which has been shown in a number of clinical studies, to naturally and therapeutically improve brain levels of serotonin---the chemical implicated in many depressions). Nor are the very serious side of effects of Paxil withdrawl dealt with in any substantial way (only to say gradual withdrawl is the rule of thumb). I have seen, for example, some studies suggesting that there are nutrient remedies involving glutathione transport(?) which can significantly reduce Paxil side-effects which many support groups on the web report as horrible.
Having said all of this, I would still highly recommend Hedaya's book, as 90% of it is excellent, timely, informative, and deals with the medicine/nutrient connection in a way I haven't seen since Durk Pearson's book, Life Extension, first appeared over 2 decades ago. Finally, highly credentialed physicians in the medical establishment are 'getting it.' Bravo!