That’s an interesting observation. Are you aware of any data on that?
What data there is backs that up, too.
https://www.upi.com/Archives/1987/12/01/Air-Force-fliers-rea...
Wouldn't surprise me if similar factors, e.g. stress on the body via aging, also impact the Y chrom and lead to more girls.
That’s an interesting observation. Are you aware of any data on that?