https://junkscience.com/1999/07/100-things-you-should-know-about-ddt/
So in reality most reputable studies showed no evidence of thinning shells among wild birds. The statistics never supported the fear mongering nor the arbitrary banning by Ruckelshouse of the fledgling EPA; an EPA hell-bent on having authority over our nation's affairs, truth be damned. One example at the link that debunks so much of the popular fear of DDT:
"The phenomena of increasing bird populations during the DDT years may be due, in part, to
So it's possible that we'd all be healthier with a daily dose of DDT