My experience has been almost the complete opposite. Granted, I don't think I've ever managed to get that high on the fat, but when I ate a high carb diet I constantly had acid reflux, couldn't eat anything hot or spicy, and had to take Prilosec every day just to be able to lie down without stomach acid shooting up my throat.

Since I've started a keto diet I have none of that. I regularly eat peppers and spicy food like pepperoni that I could have never eaten before, have no problems with acid reflux, and don't even need to take the heart burn pill every day.

I've often wondered if it was the carbs doing it, fried foods or vegetable oil (hard to eat much fried / breaded food on a keto diet, and most of my "oils" are from animal fats / butter now), the fact that I've lost a little weight, or some combination of the above to blame.

i've had lots of heartburn since keto, though I suspect it's because I haven't cut back on the coffee and tea. most people seem to get rid of their heartburn with keto. wish i could find some sugar-free antacids in my local pharmacy. i've taken to mixing baking soda and water.