The error with lead was the opposite one. It was a moral panic that's lead to the current health crisis, both mental and physical. People need heavy metals, they are essential.
In the case of lead, it seems to be necessary for glucose transport, and seems to have effects similar to Rapamycin. It seems that Rapamycin basically only works by compensating for lead deficiency to some degree.
https://www.sciencedirect.com/science/article/abs/pii/S03784...
It’s interesting in that I can’t think of any political or cultural conflict it ties into? They just enjoy their daily cadmium, it appears.
Anyway, give me a better explanation why people don't look like they did only a few decades ago.