My diabetes specialist doesn’t have diabetes himself or insulin resistance or anything… I’ve talked to him at length about my blood sugar crashes, which I’ve had all my life - even decades before ever getting anywhere near being insulin resistant (my parents were hugely fussy about us kids eating healthy and there were never sweets or junk food in our house growing up).
He told me that he gets those weird blood sugar crashes too, after a meal sometimes. That blood sugar crashes post a meal doesn’t have to have anything to do with diabetes or insulin resistance. And from my experience, I agree with that.
I wouldn’t call “passing out on the couch for half an hour” after a meal a blood sugar crash tho… For me, a blood sugar crash feels very, very different… I get quite anxious and distressed in a blood sugar crash, to be honest.
When I was a kid, those post meal tiredness slumps used to be explained as “all the blood rushes to your digestive system and away from your brain” - I have no idea whether that’s still considered medically/ scientifically valid or not…
I do know that the body has two states - which has to do with the sympathetic nervous system and the parasympathetic nervous system - the former is like the gas pedal in our body, the latter like the brake pedal… The first is for fight/ flight type stuff, the latter is for “rest and digest” (and also procreating).
Eating food is a known way to trigger your parasympathetic system - ie to set off feelings of wellness, comfort, slowing down, resting, etc. (Which is why we have words like comfort food and why ppl engage in eating as an addictive/ stress-relieving process.)
So, feeling a bit slower and relaxed after a meal is kind of a normal bodily function.
But occasionally after a (normal SAD) meal, I’d get those tiredness crashes, where you just want to sleep…
Again, for me that doesn’t FEEL like a blood sugar crash at all… which is why I was interested to hear if pronounced post meal tiredness is somehow specifically related to insulin resistance…
Would be interesting to know if anyone here has done any BG measurements during a post meal sleepy phase… to see whether it actually is blood sugar going down or not…
I don’t recall having any post meal sleepiness since starting Keto tho, so maybe it’s just not a phenomenon observed much on a Keto forum…?