Peter Attia experienced a rapid drop in glucose and ketones, leading to a near-unconscious state and profound perspiration during an insulin suppression test while on a ketogenic diet.

“within an hour meaning after just the first second third sample it was clear my glucose was going down very quickly... at 90 minutes and I have to go back and look because I have all the data I could be wrong maybe it was a little longer than I think was about 90 minutes they basically turned the insulin off now at this point my ketone started to go down I think between the 90 minute and the two-hour mark it got really bad really quick and my ketones at this point had gone from I don't remember somewhere between two and a half maybe three millimolar down to less than 1 millimolar and they said you know we're gonna stop the test now because your your glucose is in the forties I believe I was at about 48 yeah no ketones you're gonna go unconscious you gotta be careful yeah so in the end I almost did go unconscious and the last thing I sort of remember was the profound perspiration that came over me”