How to destroy biofilms in the body?

How to Destroy Biofilms in the Body

When bacteria form stubborn colonies known as biofilms, they create a protective shield that makes them highly resistant to antibiotics and the body’s immune system. These slimy layers can cling to medical devices like catheters or heart valves, or even embed in tissues, leading to persistent infections that are difficult to eradicate.

“The only way to treat a biofilm is to physically remove it from the body,” says David Andes, a professor of medicine at the University of Wisconsin School of Medicine and Public Health. This insight underscores a major challenge in modern medicine: you can’t simply drug your way out of a biofilm infection.

While antibiotics may help control free-floating bacteria, they often fail to penetrate the dense, glue-like matrix of a biofilm. Researchers have explored enzyme-based therapies, antimicrobial peptides, and even phage therapy to disrupt these structures—but none have reliably replaced the need for surgical or mechanical intervention.

In practice, this means infections involving biofilms—such as those tied to joint replacements, pacemakers, or chronic wounds—often require removing or cleaning the infected device or tissue. For example, a urinary tract infection linked to a catheter might not resolve until the catheter is replaced. In cases of prosthetic joint infections, multiple surgeries may be needed to clear the biofilm entirely.

Prevention, therefore, plays a critical role. Improving sterile techniques during surgery, developing antimicrobial-coated medical devices, and early diagnosis of infection are key strategies in reducing biofilm-related complications.

Though science continues to search for non-invasive ways to break down biofilms, the current gold standard remains physical removal. Until a breakthrough emerges, clinicians rely on a combination of vigilance, timely intervention, and, when necessary, the surgeon’s scalpel to win the battle against these resilient microbial fortresses.