I’m sorry, but your post is nonresponsive to what I asked you.
I have already agreed that there are examples of people being harmed through improper usage of modern medicine. I’ll even agree antibiotics are capable of being misused, to the detriment of the individual and society at large.
I asked you what diet would provide natural protection against bubonic plague, smallpox, and malaria?
Any diet that is devoid of non life-source ingredients, includes adequate protein to maintain cellular reproduction, and contains a wide variety of herbs such as some common spices like oregano, garlic, turmeric, and adequate daily portions of indoles (cabbage, cauliflower, broccoli etc).
The spices aren’t just for flavor; they are major fighters of pathogens. Also very helpful, although not needed more than about once a week are fermented vegetables, like sauer kraut, which replenish the beneficial bacteria in your intestines. Buy them fresh, not pasteurized, or make them yourself, because pasteurization obviously kills the bacteria that you need. Also, some of the garlic that you eat should be chewed fresh, because that is the only way to get the alicin.