Do all grain's carbohydrates turn into sugar?

Yes, the carbohydrates in grains ultimately break down into sugars during digestion. Grains contain starches, which are complex carbohydrates that are enzymatically converted into simpler sugars like glucose. However, the rate and extent of this conversion can vary depending on the type of grain and its processing. Whole grains, for example, tend to have a slower digestion rate compared to refined grains, leading to a more gradual release of sugar into the bloodstream.