The Financial Times reports the researchers did not identify a reason for the drop, but they did speculate: “increased environmental pollution, including pollution of water, air and food” could be one cause, they say.

The FT says the problem doesn’t appear to be restricted to Hunan based on local media reports or the experts it spoke with. The Times of London reported earlier this month that the decrease in quality coincides with a rise in demand, leading a number of what it reports are China’s 17 sperm banks to up the compensation offered (some are advertising a new iPhone) or loosening donor stipulations regarding donor height or education level.

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Maybe taz why PAP wants FTs. Going by our birth rates, our Chinese men also seem to have similar problems.