Rye bread is a fiber powerhouse. One slice can pack up to five grams of fiber, that's roughly 20% of your daily needs in one ...

Rye is a whole grain that is high in soluble fibre, which helps to regulate blood sugar levels by slowing the digestion and absorption of carbohydrates. This bread also has a lower glycemic index ...

"Rye bread contains fiber ... The fermentation process in sourdough bread can reduce its glycemic index, making it slower to digest and less likely to cause a spike in blood sugar.