Today’s edition of Monday Musings is a quick account of two recent studies that highlight actual, literal threats to the fruitfulness and productivity of the human male loin. For years, the average male sperm count has been decreasing, especially in Western industrialized nations, by about 1% to 2% per year. Globally, of course, populations have been increasing, so sperm is successful by playing the numbers game, but we’re worried about the individual. We’re concerned with per capita sperm count. And it’s been dropping.
But why?

For candidate number one, let’s look to the bones. Bones, as you know, are active, living organs rather than passive inert structures. They grow (in response to a complex soup of hormonal messaging), they densify (in response to weight-bearing activity), they even atrophy (in response to a lack of weight-bearing activity and/or gravity). The primary regulators of bone growth and function are the sexual organs, which manufacture […]

Original post by Mark Sisson

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