Just this tweet

AZT was a drug that activists with HIV/AIDS fought to get access to in mass protests of the FDA that resulted in fundamental changes to drug testing. The history here isn't "only let doctors have opinions" it's patient advocacy. RFK type quacks are loathed by disability advocates too.

One of the more clear explanations of the economics of food adulteration is from Engels, but the US was similar (except we had far more patent medicines). The poor eat poison, the rich don't, if you don't regulate adulteration & production.