I'm a firm believer that these Atkins type diets propagate Cancer. Cancer has no cure, but research and data has confirmed a lot about the relationship of diet and cancer. It's easy to say "our ancestors ate" but actual data and studies show the truth. For starters, our ancestors didn't live long. Period. They did not set the bar on diet by any stretch. It's a mistake to look in to the past for diet advice when we have answers and solutions readily available for anyone looking to find out the truth. A pilot whith a reasonable I.Q. would not be bias. If his/her intent is to increase health span and fly as long as possible this person would look at all research you to date and would never ever trust a doctor. We all have access to the same information that doctors do. A pilot interested in flying well in to his/her 80's and 90's may be interested in looking up something called "blue zones". We know who lives long and healthy lives, they eact starches, lots of starches..... carbohydrates. https://www.bluezones.com/2015/04/t...althiest-people-9-questions-for-dan-buettner/ A pilot interested in flying for decades may want to look up history like, smoking which doctors and government recommended. It literally took 70 years of fighting for doctors and government to tell people you will die from smoking. It took 50 years for doctors to tell people asbestos was deadly. You can not trust a doctor. Read. Study. Research. A smart pilot interested in flying as a senior citizen may want to research how many classes on nutrition are taught at medical school. This same pilot may want to look up athletes and what they do. Look up vegan athletes, what do they do? A pilot who is serious about life span or health span as it concerns cancer may want to read and understand the studies done on sugar feeding cancer. What does that actually mean? Who did the study? Was it accurate. And is sugar from Mt Dew really the same as converted sugar from natural foods like potatoes or strawberries? I myself am very well read on this topic, extremely well read. I suggest anyone interested in flying long term do some research in to the truth and never ever under any circumstances take anyone's advise because your life actually does depend in the truth. Good luck fellow pilots, I hope you all live a long and healthy life and are able to fly well in to your 90's because it's possible. Brutality today.