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>>> (As if first time mothers didn’t have enough to worry about - stop stressing so much, it could lead to long-lasting irreversible changes to your fetus!)

This is plainly not plausible. "Irreversible" doesn't play well with the length of time humans have been a thing.

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Ask a parent what they hear when they hear “irreversible” in conjunction with their child. I promise nobody mistook that for “until the heat death of the universe,” but I can add a note if you really think it’s warranted.

You definitely make a good point.

But even reversible changes aren’t always “reversed”. They aren’t necessarily minor.

Sure, breaking an arm or skipping high school can be a “reversible” change. But not often not fully “reversed” and/or not done so in a negligible time frame. There are costs. Seems like biological development could be similar.

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