Saw this in my news collection - https://www.nytimes.com/2018/07/25/style/sperm-count.html , http://archive.is/NUBHL (note, if you run out of free articles, use incognito mode).

"Rollo Tomassi, another leader in the manosphere, who runs a site called The Rational Male, said the sperm count study last year was a watershed moment. To his mind, it showed definitively that modern society was weakening men.

“For guys in the ’sphere, there’s finally some sort of barometer to test their overall health from a historical perspective,” Mr. Tomassi said.

He said men who believe this cite the idea that there could be trace amounts of birth control in the water supply and also cite myths about foods like soy. He, however, prefers to blame egalitarian socialization. “We don’t teach boys to be competitive anymore,” Mr. Tomassi said.

A common derogatory term in the manosphere is “soy boy.”

“Everybody thinks there’s a soy link,” he said.

According to Mr. Tomassi, many men are starting to look into testosterone replacement therapy (T.R.T.).

“T.R.T. — it’s a big deal in the manosphere right now,” Mr. Tomassi said. “That’s the real health news: There’s this sudden revelation and guys are saying, ‘Oh man, my sperm count is hella low, how can I fix this?’ Then they realize their testosterone is lower than it should be.”"

“Dr. Levine said that it seems exposure to pesticides, obesity and smoking could contribute to low sperm count.

He also suggested something more complex. “Social factors could definitely influence this,” he said. “We are animals. The social rank, the socioeconomic position, is important.”

There are also a few studies that show there may be decreasing testosterone levels over the last 20 years, and this trend line may be related to sperm counts, Dr. Levine said.”

Interesting topic and something worthy of discussion, especially the social factors. Obesity one can control for, smoking as well, however the exposure to pesticides makes me wonder where we are getting our daily dose of pesticides from.

Additionally the social factors are something important. If you aren’t a victorious lobster your entire life, well, you’re going to have a hard time, and produce less testosterone.

Thoughts? The key takeaway for me was to ensure my son (and I) get enough exercise, figure out where the pesticides in our diet are and remove them, and become victorious/do things when growing up that increase testosterone.

It doesn’t look like there hasn’t been enough research since then due to lack of interest. Perhaps culturally women are less concerned… there will always be other alphas.

Edit: Well now, isn't that interesting. Initially the title was "Men Are Panicking About Their Sperm Count - A study suggests that sperm counts have been dropping for decades. Is this how the big dystopia begins? Silicon Valley is at hand to help men get their mojo back.", and they changed it to "How to Fix Your Sad and Sluggish Sperm - Sperm counts have been dropping for decades. The men’s rights crowd blames soy, birth control, and feminism. But what if you just ditched the tight jeans?" I'm not surprised, of course, though good that I captured the original.