Introduction<br />Antibiotics are medications used to combat infections caused by bacteria. They are considered one of the greatest medical discoveries of the 20th century, having saved millions of lives from diseases that were once fatal. However, their misuse now poses a serious threat to public health.<br />What Are Antibiotics?<br />An antibiotic is a chemical substance produced by microorganisms or synthetically manufactured to kill or inhibit the growth of bacteria. Antibiotics are ineffective against viruses, meaning they cannot treat viral infections such as the common cold or influenza.<br />Types of Antibiotics<br />Antibiotics vary in their mechanisms of action and the range of bacteria they target. Generally, they are classified into two categories:<br />Broad-spectrum antibiotics: These target a wide range of bacteria, such as amoxicillin and tetracycline.<br />Narrow-spectrum antibiotics: These are effective against specific types of bacteria, such as penicillin.<br />Some antibiotics work by killing bacteria directly, while others inhibit their growth, allowing the immune system to overcome the infection.<br />Uses of Antibiotics<br />Antibiotics are used to treat various bacterial infections, including:<br />Bacterial throat infections<br />Pneumonia<br />Urinary tract infections<br />Skin infections and abscesses<br />Post-surgical infections<br />Antibiotic Resistance<br />Antibiotic resistance is one of the most serious health threats of modern times. It occurs when bacteria evolve mechanisms to survive exposure to antibiotics, making infections harder to treat.<br />Causes of Antibiotic Resistance:<br />Overuse or misuse of antibiotics<br />Not completing the full prescribed course<br />Using antibiotics without medical supervision<br />Indiscriminate use in agriculture and livestock<br />How to Use Antibiotics Properly<br />Only use antibiotics when prescribed by a healthcare professional<br />Follow the exact dosage and duration instructions<br />Do not share antibiotics with others<br />Never use leftover antibiotics from previous treatments<br />Conclusion<br />While antibiotics represent a revolution in modern medicine, their careless use can lead to dangerous consequences. Raising public awareness about their proper use is essential to preserve their effectiveness for future generations.<br />Huda Rafid Abd Alkhaliq<br />AL_mustaqbal University is the first university in Iraq