Antibiotic abuse and improper use. You would be surprised but these retards will use antibiotics for everything and not even follow through on the treatment resulting in bacteria that becomes resistant to said bacteria. They also dump this shit everywhere resulting in a similar situation. They're not spiking rivers on purpose, it's just easier and most importantly cheaper to dump shit inproperly. Slowly but surely antibiotic resistant strains of certain bacteria are propagating. Eventually we will have people dying of infections that could easily have been cured in the 1950s. Immigration is just spreading this problem because we've got people with super bacteria in their ass walking over the border and then eventually getting it spread to hospitals and everywhere else. If you want to stay healthy the best thing we can do now except just not being fat is watch our diet. Look up how to cultivate a healthy gut biome. Probiotics is the new antibiotic and we're even finding that gut flora transplants can actually cure autism. It's insane. There are tons of probiotic foods and drinks out there. Personally I drink a ton of kefir and eat a lot of sauerkraut.