But what if we consume those chickens, isn't that antibiotic somehow going to end up inside us sooner or later? And that will indirectly influence our size? I

But what if we consume those chickens, isn't that antibiotic somehow going to end up inside us sooner or later? And that will indirectly influence our size? Is there any pattern of size gain/growth in humans since we started using antibiotics on farm animals? One thing always have been mysterious to me is that growth/size is attributed to nutrition/genes/workout but I know some villages (more like distant tribes with no connection to modern world) who practise old style farming and heading livestock without any modern methods and they've plenty to eat but still they've not gotten taller or bigger. They've sheeps, goats, chickens, plenty of fruits and grains in their diet, lots of physical work but no size gain. And if the person from the same tribes comes to the US as a kid, you can see them get taller/bigger then their siblings back home. So it can't be their genetic limit.