So people kind of knew asbestos was harmful wayyy before it mostly stopped being used in 1979 (USA). But, it was still used constantly in many industries and ended up everywhere. What do you think is an example of something we find out is DRASTICALLY harmful 10-50 years from now? My guess would be screen time.
That’s the problem, the main people who do are the companies profiting. Something something conflict of interest
Teflon, see my other comment.
The sources are more understood than the consequences.