Slow Stomach Emptying
One proposed mechanism behind vinegar’s effect on post-meal blood sugar is that acetic acid may slow gastric emptying—the rate at which food leaves the stomach.
That can sometimes reduce how quickly carbohydrates enter the bloodstream.
But there is an important catch.
Slower stomach emptying is **not necessarily beneficial for digestion**.
For people who already have delayed gastric emptying, such as some people with diabetic gastroparesis, adding vinegar could potentially worsen feelings of:
* Fullness
* Nausea
* Bloating
* Abdominal discomfort
So describing vinegar simply as something that “improves digestion” is
