The logic behind "depression" being a verifiable source of symptoms of adrenal fatigue is completely illogical. For example, if Depression is the cause of heart rate changes, heart palpitations, low temperature, low energy, brain fog, then it is pure logic to assume that Depression is PHYSICAL.

Now, that we have come to the assertion that Depression is physical, it means that there are physical changes in the body associated with depression. This is where it gets illogical. Since changes in mood are connected with depression, the changes in mood are synonymous with depression all of a sudden. All of a sudden, your mood and depression are the "same thing". The stigma of changes in mood is what trips up even smart doctors. It is too human to believe that we can always control our moods, and have control over our body.

However, logically, long standing depression that does not change no matter what a person does is always a symptom of an underlying physical illness.