Hi Tim,
As you probably expected, I reply to this thread.
When I was on a standard Low-Carb diet my blood-sugar levels were not under great control and I did not notice any difference with my experience of low blood-sugar levels.
When I narrowed down my Low-Carb diet into a Ketogenic diet I noticed a really big difference. My loss of brain function during low blood-sugar episodes is
hugely reduced when using the Keto diet.
For me the game-changer is being in Ketosis or not. When YES, I do not get any classic 'Hypo' warning signs and I do not get any loss of brain function. When NO, I get my 'Hypo' warning signs and if I don't act on them then it proceeds to loss of brain function. So I absolutely agree with your interpretation that feeding your brain with fats, not Glucose, makes the difference.
In the last week I had a very low blood-sugar. I felt very sleepy during the afternoon (an indication for me, when in Ketosis, that my blood-sugar may have been very low for several hours). So I measured, and saw that I was 20mg/dl (1.1 mmol/l). No drama, no confusion, no double-vision, no loss of balance. I took a few Glucose tablets to correct and went on with my day.
As always, I thank my lovely Ketones for keeping my brain nice and safe during times of low blood-sugar.
If the brain fuel is Ketones (Fat) rather than Glucose, then I could expect that people will continue to act normally even when blood-sugar levels drop low. This is because there is no interrupt in brain fuel. Certainly this is the case for me; am interested to see what other people report on this thread.
Regards
Antony