Indigestion can cause constipation, as the gastrointestinal tract's ability to digest and absorb food decreases, preventing efficient elimination of feces. Indigestion is common among adolescents, often due to irregular and spicy eating habits, a preference for puffed food, and insufficient water intake. Prolonged periods can lead to constipation, so it is important to adjust dietary habits, eat more green vegetables, drink plenty of water, engage in outdoor activities, and develop the habit of defecating at regular times. These measures can effectively alleviate or prevent constipation.