Eating fiber slows down sugar absorption, which means less insulin is made, helping your kidneys release salt and lower blood pressure.
Scientific Claim
Dietary fiber reduces postprandial blood glucose spikes by slowing absorption, thereby decreasing insulin secretion and enabling normal renal sodium excretion.
Original Statement
“Dietary fiber works through a completely different pathway. the insulin pathway that I mentioned earlier. What happens is that fiber slows glucose absorption which flattens those postmeal blood sugar spikes that we all get. This in turn reduces the amount of insulin that your pancreas has to produce throughout the day. And remember what I said about insulin. Lower insulin means the kidneys aren't being constantly signaled to retain sodium, which allows natural pressure regulation to resume.”
Context Details
Domain
cardiology
Population
human
Subject
dietary fiber
Action
reduces
Target
postprandial blood glucose spikes and insulin secretion
Intervention Details
Evidence from Studies
Supporting (2)
This study found that a specific type of fiber can help lower blood sugar and insulin levels after eating.
This study shows that adding fiber to shakes can help reduce blood sugar spikes after eating.
Technical explanation
This paper directly tests the effect of adding dietary fiber sources to shakes on postprandial glycemia, finding a significant reduction.
Contradicting (1)
This study did not find that fiber supplements improved blood sugar control.