"Declining Sex Ratio in a First Nation Community" (chemical exposure decreasing the number of male births)https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1281269/ …
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Replying to @NishikiPrestige
IIRC, there was a theory that stress lowers the ratio by causing spontaneous miscarriage of lower fitness males. My wife is always stressed, and all of my sons are absolute beasts.
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Replying to @The_WGD
I remember something related.. in high competition environments females are more likely to breed, so women end up having more daughters
11:24 AM - 30 Aug 2018
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