Not getting enough fiber in the diet can lead to a host of potential consequences, including digestive issues such as constipation, bloating, and irregular bowel movements. A low-fiber diet may contribute to weight gain, as fiber promotes satiety and regulates appetite. Additionally, insufficient fiber intake is linked to an increased risk of chronic diseases such as type 2 diabetes, heart disease, and certain types of cancer. Ensuring adequate fiber intake from whole grains, fruits, and vegetables is crucial for maintaining overall health.