I wish, TFGā¦
Have to get the stomach and small intestine emptied out, then a while goes by - the āpost-absorptive phaseā - and then glycogen gets depleted. After that is when autophagy can be really ramping up. If itās before 24 hours, cool, and maybe toward the end of the first day weāre getting some increase, especially coming from a keto diet where glycogen should already be low.
From the website you linked to:
āTo know whether or not youāre more anabolic or catabolic or more mTOR or AMPK activated, you can measure your insulin to glucagon ratio.ā
There will be such variability there that as stated itās wrong. We know that having been eating ketogenically or not makes an enormous difference there - as in the excellent video (on Youtube among other places) - Dr. Benjamin Bikman - āInsulin vs. Glucagon: The relevance of dietary proteinā
The response to eating protein is vastly different, coming from either a high-carb or very low-carb context. There was a 70 to 1 difference in the changing of that insulin/glucagon ration between the two groups, after eating protein. Thus, one could be still profoundly anabolic, eating ketogenically and just plain eating, period - and think one had more autophagy going on than a carb-burner who had fasted for a day.
The site is right about mTOR and AMPK signaling, but just plugging in the insulin/glucagon ratio will be useless. At the least, it would need to be calibrated for a keto diet or not, and for the individual - oneās degree of insulin resistance will affect the ratio.
Overall, the insulin/glucagon ratio gets more favorable for autophagy through at least 4 to 6 days of fasting, for both keto eaters and otherwise. mTOR and AMPK are nutrient sensors, and it is the lack of protein and carbohydrates that theyāre mostly concerned with. Fat, especially a little bit, isnāt going to do much.