https://www.sciencedaily.com/releases/2014/08/140814123426.htm

∞ Predicted this 15 years ago.

“We found that when you perturb gut microbes early in life among mice and then stop the antibiotics, the microbes normalize but the effects on host metabolism are permanent,” says senior author Martin Blaser, MD, the Muriel G. and George W. Singer Professor of Translational Medicine, director of the NYU Human Microbiome Program, and professor of microbiology at NYU School of Medicine. “This supports the idea of a developmental window in which microbes participate. It’s a novel concept, and we’re providing direct evidence for it.”