Fiber is a crucial part of a healthy diet, primarily found in fruits, vegetables, whole grains, and legumes. It aids in digestion, helps maintain a healthy weight, and lowers the risk of chronic diseases such as heart disease and diabetes. There are two main types of fiber: soluble and insoluble. Soluble fiber dissolves in water and can help lower cholesterol levels, while insoluble fiber adds bulk to the stool and promotes regular bowel movements. Including a variety of fiber-rich foods in your diet is essential for overall health.