Yeah "positive thinking and going with the flow will fix disease". Tell me: why didn't everyone 1000 years ago live to be a hundred everywhere? Oh that's right: because it's not that simple.
https://towardsdatascience.com/has-global-violence-declined-...
Or dead in childbirth at 14, or dead from gangrene from a small cut, or dead from diabetes or asthma or simple nearsightedness.