Biofilm
A structured community of microorganisms encased in a self-produced, protective matrix that adheres to a surface. These communities are architecturally sophisticated and often manage their environment to resist cleaning attempts or antibiotic treatments.
A biofilm is a complex, structured community of microorganisms that adhere to a surface and are encased in a self-produced, protective matrix of extracellular polymeric substances. These communities are architecturally sophisticated, often managing their environment to resist cleaning attempts and antibiotic treatments. Biofilms are commonly found in natural settings like water systems, plumbing, and medical devices, where they can cause chronic infections or system degradation.
What this means in real life
The fuzzy coating on your teeth that hardens into tartar is a bacterial biofilm; brushing disrupts it, but if left alone, the bacteria become harder to kill and cause gum disease.
What it isn’t
Not simply a layer of slime or dirt. Biofilms are living, organized communities with coordinated behavior and chemical communication—not passive accumulations of dead matter or random bacterial clumps.
Commonly misused online
Often conflated with 'bacterial slime' or used as a catch-all for any slimy microbial growth. In wellness spaces, 'biofilm detox' claims vastly overstate the ability of supplements to disrupt real biofilms.