“Antibiotics can treat the common cold”

Many people mistakenly believe that antibiotics can cure the common cold, a misconception that likely stems from a general understanding of antibiotics as powerful medications for combating illness. However, the fundamental scientific truth is that colds are caused by viruses, such as rhinoviruses or coronaviruses, and antibiotics are specifically designed to target and destroy bacteria. Viruses and bacteria are distinct types of microorganisms with different structures and ways of replicating, meaning a drug effective against one will not work against the other.

This enduring myth is often perpetuated by a desire for a quick fix and a misunderstanding of how illnesses progress. When someone feels unwell with a cold, they naturally seek relief, and antibiotics can seem like a potent solution. Historically, and even in some current practices, antibiotics have been overprescribed for viral infections, which can inadvertently reinforce the belief that they are effective. Patients may also pressure doctors for a prescription, and doctors might sometimes prescribe them to satisfy patient expectations, even though they know antibiotics are ineffective for viruses.

People commonly believe this myth because cold symptoms often improve naturally within a few days to a week, which might coincide with the period someone might take an unnecessary antibiotic, leading to the false impression that the medication was responsible for their recovery. Additionally, the presence of colored mucus, often thought to indicate a bacterial infection, is actually a normal part of a cold's progression and does not signify a need for antibiotics. Using antibiotics when they are not needed not only fails to alleviate cold symptoms but also contributes to the serious global health threat of antibiotic resistance, making it harder to treat actual bacterial infections in the future.