Ok, thanks for answer. It is certainly true that people have a desire to believe that medicine works independent of its actual effectiveness; you only have to look back a few generations to when people were very serious about prescribing and using remedies that came down to various combinations of opiates, laxatives, and alcohol.
Scepticism of pharmaceuticals, BTW, is common among my chronically-ill friends and friends of friends. In other words, after 5 or 10 years of being sick and having tried various treatments, the sick people I know who were originally agnostic towards pharmaceuticals tend to have soured on pharmaceuticals. Most of them BtW still like non-herbal supplements, herbs being more like pharmaceuticals than they are like non-herbal supplements. A lot of them will not even try antidepressants, cholesterol-lowering drugs, non-steriodal anti-inflammatory drugs and (not...
Today I received some shoes in the post, which included a couple of packets of silica gel. I don't think I have ever seen a packet of silica gel that didn't have "DO NOT EAT" printed on it, and it's always bemused me. It doesn't look edible, or smell appetising, and isn't even especially harmful to ingest in most circumstances. Chances are that if I ever did want to eat silica gel, I'd probably have a damn good reason, and a lifetime of being told to not eat it is an obstacle to that.
This has started me thinking about all the other things we internalise as serious hazards contrary to reality. As a child, I was told that picking my nose and eating it would have some sort of cumulative toxic effect. This was obviously a lie manufactured by my parents (or maybe their parents) to get me to stop doing it, but a couple of decades later I felt positively scandalised when I read about an Austrian pathologist who claimed the practise was beneficial to the immune system. (Although this is mentioned in the delightful Wikipedia page on nose-picking, the reference links are dead, so I'd actually treat this assertion with caution, but feel free to munch away on your own dried nasal mucus anyway).
Although nose-picking and eating the packaging that shoes come in are pretty trivial examples, I do wonder how many of these prohibitive false dire consequences I'm still labouring under, invisibly making my life more difficult. I also wonder how many full-grown adults still don't accept sweets from strangers.
Do you have any examples of an authority figure, or a prevailing piece of cultural conditioning, giving warnings of dire outcomes you later discovered to be false, misleading or based on an agenda you were naive to at the time?