Hippocrates the "Father of Medicine" said "Let food be thy medicine and medicine be thy food".....Hippocrates a physician back in 460BC knew full well food was what kept people healthy and what made them sick. He was a great observer and after much observation he advised people not to eat animals with slit hooves especially swines because they stood in their own bacterial laden deification causing people to become grossly sick. He also advised people to eat lots of veggies, fruit, seeds/nuts. Many religions adopted his food eating ideas for health safety which some stand still to this day. "Medical historians generally look to Hippocrates as the founder of medicine as a rational science. It was Hippocrates who finally freed medicine fromthe shackles of magic, superstition, and the supernatural.
Hippocrates collected data and conducted experiments to show that disease was a natural process; that the signs and symptoms of a disease were caused by the natural reactions of the body to the disease process; and that the chief role of the physician was to aid the natural resistance of the body to overcome the metabolic imbalance and restore health and harmony to the organism". How did Hippocrates do this back in 460BC long before pharmaceutical companies came into profiteering I mean the picture? By directing people towards eating a healthy diet.
How do you ignore the adrenal glands based on simply saying there is no "research to substantiating adrenal fatigue"? Have you check with the largest Med school libraries, Library of Congress or the American Medical Journal or other medical journals around the world and found absolutely nothing on adrenal fatigue? If you did you would find plenty on this very subject all the way back to the 1800's when it was discovered how important they are to our health and well being.
The Adrenal glands sit DIRECTLY on top of our Kidneys....our kidneys are one of the most important organ in our body...would you not think that the adrenal glands being placed on top of the Kidneys to regulate our blood pressure, blood sugar, cortisol & adrenaline levels (fight or flight mode) and over 50 hormones including all the female/male hormones are the lest bit important? Would you also so bluntly assume that the glands would not get fatigue by working to hard? fatigued by not fueling the body with healthy rich in vitamin/mineral food? After all look what happens to your kidneys if you eat a poor diet = you can die!
Adrenal fatigue was discovered in the 1800's...why do you think our soldiers upon returning from WWI and WWII were sent to "Rest and Recovery Hospitals" to deal with their "shell shock" (now known as PTSD = adrenal fatigue)...because doctors knew back then that the adrenal glands could become fatigue due to continual stress and poor diet something all of these soldiers endured along with soldiers today...and they knew to heal the soldiers adrenal glands the soldiers needed a good clean healthy diet to flood their body with much needed vitamins/minerals, plenty of rest & recovery and plenty of sleep to get their adrenal glands back in proper working order. Something pilots can relate to = stressful job, lack of sleep a set bed time on the road/getting less then 8 hours sleep, poor diet (hotel/airline food).
Remember the old saying: You are what you eat...popping a pill is simply a band aid in most cases...eating a health diet WILL build your immune system up while at the same time detoxing your digestive system which house 90% of the good/bad bacteria in our bodies (and detox all organs including the kidneys, liver, blood stream etc)...detoxing helps the good bacteria fight off the bad bacteria = keep you healthy!!
Changing your diet is not "snake oil" as you put it.
What is the first thing a doctor tells a patient with high blood pressure, diabetes, heart issues or other health issues that can easy be corrected = CHANGE YOUR DIET!! Why? Because changing their diet works better then a pill!!
Changing your diet to a healthy diet will improve your immune system, detox your organs, flood your body with vitamins and minerals including your adrenal glands and return you to good health with LOTS of energy but most importantly it will allow you to NEVER stress again when going for your flight medical!!!
Why would you not try a change in diet to not stress about your next flight medical?