alt Hacker News> before the 50s and 60s everyone knew you should cover up and women wore bonnets. That too much sun was bad for you.
I'd say partly true, mostly false. As sibling comment mentions, much of this was driven by fashion and class etc. and not from some fundamental understanding of damaging UV exposure.
Furthermore there was research that was trendy at the time called "heliotherapy" [0] where all sorts of diseases were believed curable by sun exposure, including smallpox, TB, etc.
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kaikai • yesterday at 6:35 PM
When I got chickenpox in the 80s my grandma made me sit out in the sun to heal it faster. Heliotherapy lives on!
In retrospect, I wonder if there was a measurable effect on sun exposure creating vitamin D => immune system recovery, especially if the patient were otherwise not outside much?
Like, I doubt that fixing a vitamin D deficiency is going to cure you of smallpox or TB, but could imagine a path where it helped at least.