Thank you for this response, Steven. It does bring a lot into this discussion. What you say is mostly true, but I deliberately kept it out of the conversation. It would complicate the narrative too much and it is best dealt with within the comment section, as we do it now.

I tried ketosis and I can testify it feels great. It's estatic, and if it is induced by fasting it gives the body to do some houskeeping (at all levels, from organs, tissues, and even at a cell level with autophagy). However, it is not healthy in the long run and there is a growing amount of evidence to it. I can find sources if you insist, but I'm sure you can do it yourself.

My personal view is that ketosis is an "emergency mechanism," which activates in times of scarcity and starvation, when only "wrong food" is available, or none at all. High levels of stress hormones are released which sharpen your senses and make you alert (you gotta find food!). These same hormones are detrimental when present for too long (Robert Sapolsky from Stanford has great research on that).

Dr Rhonda Patric in one of her podcasts argues for an intermittent ketosis, which is probably what naturally happens in the wild; there are times of abundance and times of scarcity. You most likely need both.

I practice intermittent fasting for years now and I did a few prolongued water fasts (up to 21 days). Again; to allow for some bodily housekeeping. But in long term (and on a daily basis) I am very much of an opinion that we are still frugivore apes. Cereals and pulses are just a hack that is becoming increasingly necessary for political reasons, which I will argue in more detail the next installment. It is logistically impossible to grow, ship, and store the amount of fresh fruits and vegetables to provide an optimal diet for the entire humanity.