Antibiotic resistance in bacteria is spreading rapidly worldwide and has even been called a global threat to humans as serious as climate change. Excessive and imprudent use of antibiotics is usually blamed, but the rate and extent of the spread can’t be explained by overuse alone.
Changing someone’s genetic programming is easier than you might think. While techniques for altering DNA at the molecular level are becoming more widely used, it’s also possible to simply turn genes on or off without permanently changing the underlying genetic material. That means we can affect the genetic instructions that get sent to an organism’s body by changing its environment or with drugs.