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Scientists warn of sperm count crisis

richarddawkins.net

11–20 of 84 posts

Re: Scientists warn of sperm count crisis

#11

Children of Men here we come! http://www.imdb.com/title/tt0206634/

That was one of the most profound movies I ever watched, I also highly recommend it. It is moving, beautiful, and makes you rethink everything we take for granted.

And the single take scenes were brilliant.

Re: Scientists warn of sperm count crisis

#12
post #6
post #4

Earlier quoted context omitted.

A bit less pessimistic view is presented by Hans Rosling at a relatively recent TED talk. http://www.ted.com/talks/hans_rosling_religions_and_babies.h... Well worth watching. Sperm count is unlikely to affect the population growth anyway, what we need is to get people out of poverty and proper family planning with access to proper birth control. Then we can "control" the population.

What we need is a 1 child policy like in China.

http://www.brycealcock.com/random/TriviaStats/ChinaPopulatio...

Because it's demonstrably successful at curbing population growth rate? Because during periods of the most aggressive enforcement of the one-child policy, China had its highest growth rate in recent history, 2-2.5x that of the US?

And now, during its period of least aggressive enforcement, but with a rapid pace of industrialization and wealth injection, the growth rate has fallen dramatically?

http://www.indexmundi.com/g/g.aspx?v=24&c=ja&l=en

Or perhaps we want to look at Japan, which without forced abortions, property confiscation, and brutal acts of repression have managed to achieve a negative growth rate?

No matter which way you slice the data, the trend is clear: industrialization, wealth, and stability decrease growth rates, and do so far better than any number of guns and Bibles you can point at people.

Re: Scientists warn of sperm count crisis

#13
post #6

Earlier quoted context omitted.

What we need is a 1 child policy like in China.

http://www.brycealcock.com/random/TriviaStats/ChinaPopulatio... Because it's demonstrably successful at curbing population growth rate? Because during periods of the most aggressive enforcement of the one-child policy, China had its highest growth rate in recent history, 2-2.5x that of the US? And now, during its period of least aggressive enforcement, but with a rapid pace of industrialization and wealth injection,…

> Because during periods of the most aggressive enforcement of the one-child policy, China had its highest growth rate in recent history, 2-2.5x that of the US?

The fact that China would think to enforce such a policy should give one pause.

Re: Scientists warn of sperm count crisis

#15
post #2

What? This is being described as a "crisis"? It's the best news I've heard all year. We should celebrate! The world's population is completely out of control, all estimates of future environmental catastrophe turn out to be overly optimistic, we're drifting into a state of perpetual war because of population pressures, and someone laments a decline in sperm count without the slightest grasp of how funny that is? Read…

Drifting into a state of perpetual war? Isn't the current period the most peaceful in known history?

Re: Scientists warn of sperm count crisis

#16
There was an article in The Economist about this as well[0], which points out something that most other sources I've seen seemed to have skipped over:

"...much of the effect could be caused by changes in how sperm quality is measured.. the World Health Organisation’s manual on the subject has been revised four times since it was first published in 1980..."

"...a continuing investigation of Danish conscripts, is notable for having been established with a consistent method of measurement from the start. Its data show no changes over the years. And Dr Rolland and Dr le Moal admit that, despite the apparent drop in sperm counts they found, there was no increase in the number of infertile men during the period of their study."

I haven't actually dived into this new study to see if the authors accounted for these factors. Even if they did, it seems odd that the one study which has maintained the same method of measurement is the one that shows no changes.

[0] http://www.economist.com/news/science-and-technology/2156787...

Re: Scientists warn of sperm count crisis

#17
post #15
post #2

What? This is being described as a "crisis"? It's the best news I've heard all year. We should celebrate! The world's population is completely out of control, all estimates of future environmental catastrophe turn out to be overly optimistic, we're drifting into a state of perpetual war because of population pressures, and someone laments a decline in sperm count without the slightest grasp of how funny that is? Read…

Drifting into a state of perpetual war? Isn't the current period the most peaceful in known history?

> Drifting into a state of perpetual war? Isn't the current period the most peaceful in known history?

Let's look at the evidence:

http://en.wikipedia.org/wiki/List_of_ongoing_military_confli...

The only reason we aren't aware of the number of military conflicts taking place is because they aren't on the evening news.

And yes, by any objective measure, this is a more warlike time than any in prior history, simply because there are more people available and willing to fight.

Re: Scientists warn of sperm count crisis

#18
post #17
post #15

Earlier quoted context omitted.

Drifting into a state of perpetual war? Isn't the current period the most peaceful in known history?

> Drifting into a state of perpetual war? Isn't the current period the most peaceful in known history? Let's look at the evidence: http://en.wikipedia.org/wiki/List_of_ongoing_military_confli... The only reason we aren't aware of the number of military conflicts taking place is because they aren't on the evening news. And yes, by any objective measure, this is a more warlike time than any in prior history, simply bec…

That's not actually evidence related to the assertion at hand. For that, you'd need a historical comparison, which that list does not provide.

You may be right about absolute numbers, but absolute numbers are pointless here. From what I've seen before, in terms of the relative number of people killed in war compared to the overall population, this is the most peaceful time known. If 2x as many people get killed in wars, but there are 4x as many people alive, that world is more peaceful, not less.

Re: Scientists warn of sperm count crisis

#19
post #6
post #4

Earlier quoted context omitted.

A bit less pessimistic view is presented by Hans Rosling at a relatively recent TED talk. http://www.ted.com/talks/hans_rosling_religions_and_babies.h... Well worth watching. Sperm count is unlikely to affect the population growth anyway, what we need is to get people out of poverty and proper family planning with access to proper birth control. Then we can "control" the population.

What we need is a 1 child policy like in China.

I don't think that policy is so great. People don't have children just because they can, we need to educate people about children and population growth. My aunt and uncle have an adopted daughter from China, she was abandoned as a result of the one child policy: the policy didn't stop her from being born, but it stopped her from having her biological family.

Re: Scientists warn of sperm count crisis

#20
post #4
post #2

What? This is being described as a "crisis"? It's the best news I've heard all year. We should celebrate! The world's population is completely out of control, all estimates of future environmental catastrophe turn out to be overly optimistic, we're drifting into a state of perpetual war because of population pressures, and someone laments a decline in sperm count without the slightest grasp of how funny that is? Read…

A bit less pessimistic view is presented by Hans Rosling at a relatively recent TED talk. http://www.ted.com/talks/hans_rosling_religions_and_babies.h... Well worth watching. Sperm count is unlikely to affect the population growth anyway, what we need is to get people out of poverty and proper family planning with access to proper birth control. Then we can "control" the population.

Don't forget educating women, which tends to result in fewer children per household.

I am concerned, though, that the temporary lull in overpopulation will be broken by belief systems that encourage large families; by definition, those with a genetic or memetic instinct to have many children will out-populate those without that instinct. (I have a soft spot for the Mormons, but they come to mind here.)

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