Antibiotic resistance occurs when bacteria evolve defenses against drugs that once killed them effectively. This growing problem is largely fueled by antibiotics misuse in healthcare, agriculture, and everyday medical practices. When antibiotics are used unnecessarily or incorrectly, bacteria are exposed to the drugs without being fully eliminated, giving them opportunities to adapt and survive.
Over time, these surviving microbes develop genetic changes that help them resist treatment. As resistant bacteria multiply, infections become harder to treat and require stronger medications or longer hospital stays. Scientists estimate that millions of people worldwide develop drug-resistant infections each year, highlighting how bacterial evolution mutations can rapidly reshape the effectiveness of modern medicine.
