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Not my experience, but that might depend on the people one interacts with. I’d also say that coupling being young to such a gendered parameter is questionable. When does someone who’s biologically male stop being young? What about people who can’t reproduce?
Yeah, but that’s why I don’t think fertility is a good measure of age in any way.
I don’t disagree with the numbers, I just don’t think they’re bound to any one aspect of the human body, nor do they need to be.