High-fiber foods play a key role in relieving constipation by increasing stool bulk and improving bowel motility. Both soluble and insoluble fibers are important. Whole grains (such as oats and whole wheat), legumes (lentils, chickpeas), vegetables (broccoli, carrots), and fruits (pears, apples, prunes) are among the most effective sources. Adequate water intake is essential when increasing fiber; otherwise, constipation may worsen. A consistent, balanced fiber intake helps prevent recurrent constipation and supports long-term digestive health.