What is one benefit of a diet rich in whole grains?

A diet rich in whole grains is particularly beneficial for promoting digestive health. Whole grains are an excellent source of dietary fiber, which plays a crucial role in maintaining a healthy digestive system. Fiber aids in the thorough movement of food through the gastrointestinal tract, helping to prevent constipation and promote regularity. Additionally, the fermentation of soluble fibers in the colon fosters the growth of beneficial gut bacteria, enhancing overall gut health and function.

The other options do not align with the benefits associated with whole grains. For example, a diet high in sugar is detrimental to health and is not a feature of whole grains, which typically have low sugar content. Contrary to what might be suggested, whole grains can actually lead to increased energy levels due to their complex carbohydrates, which provide a steady source of energy as they are digested more slowly than refined grains. Lastly, whole grains are rich in various vitamins and minerals, such as B vitamins, iron, magnesium, and selenium, and do not limit vitamin intake, but rather contribute to it. This further underscores the importance of incorporating whole grains into the diet for optimal health.