Introduction Coffee is one of the most widely consumed beverages in the world. Many people drink it because it provides temporary energy and improves concentration. Despite its benefits when consumed in moderation, excessive coffee intake may cause several physical and psychological health problems. Harmful Effects of Excessive Coffee Consumption 1. Insomnia and Sleep Disorders Coffee contains caffeine, which stimulates the central nervous system and may lead to difficulty sleeping or insomnia, especially when consumed in the evening. This can result in constant fatigue and poor concentration the following day. 2. Anxiety and Stress Excessive coffee consumption may increase feelings of anxiety, nervousness, and rapid heartbeat, particularly in individuals who are sensitive to caffeine. It may also cause hand tremors and noticeable psychological tension. 3. Digestive System Disorders Coffee can increase the secretion of stomach acids, leading to heartburn or abdominal pain. It may also worsen symptoms of irritable bowel syndrome in some people. 4. High Blood Pressure Caffeine may cause a temporary rise in blood pressure, and excessive intake can pose a risk to individuals with hypertension or heart disease. 5. Addiction and Psychological Dependence Daily reliance on coffee may lead to psychological dependence, as individuals may experience headaches, fatigue, and mood changes when they suddenly stop drinking it. 6. Reduced Mineral Absorption Excessive coffee intake may reduce the absorption of important minerals such as iron and calcium, which can lead to anemia or weakened bones in the long term. 7. Increased Heart Rate In some cases, coffee may cause rapid or irregular heartbeats, especially when large amounts are consumed within a short period. 8. Effects on Pregnant Women Excessive coffee consumption during pregnancy may increase the risk of low birth weight or other complications. Therefore, reducing caffeine intake during pregnancy is strongly recommended. Conclusion Although coffee is a popular beverage with certain health benefits, moderation is essential to maintain good health. Excessive coffee consumption can lead to physical and psychological problems that negatively affect quality of life. Therefore, it is recommended to consume coffee wisely and in moderate amounts. Fatima Make Noor Al-Mustaqbal University The First University in Iraq