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Me too. BTW I'm A so don't think it is the reason. I also heard that blood sugar plays a hand here, but could also be pseudoscience.

Just one anecdote as a type 2 person: I cannot prove it scientifically yet, but I did notice that on bad diet days, I get bit more than otherwise.

I wish there is some study for that, hmmm. I usually keep the same (bad) diet every day so it's kinda hard to test.