Eating fiber slows sugar absorption, which reduces insulin spikes and helps your kidneys regulate salt normally.

“Moving on to diet. So, 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. It's beautifully simple when you think about it.”