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What do you mean by male feminisation? I get the impression from context that you're referring to biological differences but that could easily be interpreted as "man aren't real men these days and that's why they can't conceive".

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I think they mean feminization in the biological sense: It's the reason fat men usually have visible breasts: the body has a pathway for converting cholesterol into estradiol[0], excessive cholesterol causes some feminization due to that.

[0] https://en.wikipedia.org/wiki/Estradiol#Biosynthesis

This is exactly what I meant. Particularly visible in richer social strata in SEA, especially in the Philippines and to a lesser extent in Malaysia & Singapore. The amount of sucrose consumed in that first country beggars belief. Everything at breakfast is full of sucrose, even the pork & of course, bacon.

Also, I appreciate your use of the singular "they" :-)

Maybe he's talking about the big drop in testosterone in males? Even things like hand grip strength have decreased.

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