I think saying that antibiotics &quot;mess up&quot; your gut microbiome is making a lot of assumptions.  Your biome changes if your diet changes.  Saying that &quot;any change&quot; is &quot;messing things up&quot; is something I don&#x27;t think has been proven.<p>Of course, there are risks of using antibiotic like C. difficile infections, but saying more than that is stretching the truth.