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Sperm Count Dropping in Western World

scientificamerican.com

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Re: Sperm Count Dropping in Western World

#31

Post by swsieber »

merkaloid wrote: post #26

Isn't this good anyway? Because of overpopulation?

No. Birthrates have been dropping, but this makes getting pregnant less predictable. There are other forces at work reducing the birthrate, and I think those would be enough without complicating people's lives.

Re: Sperm Count Dropping in Western World

#32

Post by iak8god »

dreamdu5t wrote: post #29

I think it's simple: fat unhealthy men have lower sperm counts and America has way more fat unhealthy men over the last 40 years. Doesn't look like the meta analysis dealt with this.

FTA: "The results, published in the journal Human Reproduction Update, showed a 52.4 percent decline in sperm concentration and a 59.3 percent decline in total sperm count among North American, European, Australian and New Zealand men."

Re: Sperm Count Dropping in Western World

#35

Post by izzydata »

dreamdu5t wrote: post #29

I think it's simple: fat unhealthy men have lower sperm counts and America has way more fat unhealthy men over the last 40 years. Doesn't look like the meta analysis dealt with this.

We can only hope. This would be a great example of natural selection at work if fat unhealthy people couldn't reproduce and thinner healthy people could.

Re: Sperm Count Dropping in Western World

#37

Post by [deleted] »

izzydata wrote: post #35
dreamdu5t wrote: post #29

I think it's simple: fat unhealthy men have lower sperm counts and America has way more fat unhealthy men over the last 40 years. Doesn't look like the meta analysis dealt with this.

We can only hope. This would be a great example of natural selection at work if fat unhealthy people couldn't reproduce and thinner healthy people could.

[deleted]

Re: Sperm Count Dropping in Western World

#40

Post by mjmj »

mgberlin wrote: post #15

I've personally become concerned recently with the abundance of BPA and it's effect on the endocrine system of men. Between disposable water bottles, aluminum can liners, and food stored in plastic containers, there's a huge amount of exposure to this endocrine disruptor. The article doesn't mention it in particular, but I think it's worth being cautious over.

Completely agree and to that end I try my best to avoid eating, drinking or storing consumables in any plastics (I just don't trust them), which is really hard. Especially avoiding heating or reheating anything in plastic.
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