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Science & Technology
Humans May Not Be Able to Reproduce Naturally Much Longer, Scientist Warns
2021-02-26
[Future Human] Many men today have just half the number of sperm their grandfathers had. The shocking discovery was published in 2017 by Shanna Swan, PhD, an environmental and reproductive epidemiologist at the Icahn School of Medicine at Mount Sinai in New York.

After analyzing 185 studies involving nearly 45,000 healthy men, Swan and her team found that over the past four decades, sperm counts among men in Western countries had dropped by more than 50%.

Why the huge decline? Swan says many factors are at play — alcohol use, smoking, body weight, and a lack of exercise are a few. But she has zeroed in on another, more insidious cause: exposure to common chemicals that interfere with the body’s production of hormones.

Swan has been studying these so-called endocrine disruptors for the past 30 years. And it turns out men’s sperm isn’t the only thing they affect: They may be changing human sexual development and reproduction in broader ways, too. In girls, exposure to such chemicals has been linked to earlier onset of puberty. Women, meanwhile, are experiencing a decline in egg quality and more miscarriages.

In a new book, Count Down: How Our Modern World Is Threatening Sperm Counts, Altering Male and Female Reproductive Development, and Imperiling the Future of the Human Race, Swan outlines the hidden damage these chemicals are having on our fertility and why we must act now to prevent them from causing further damage.

In the book, she makes a provocative claim: Humans may not have the ability to reproduce naturally for much longer. She estimates that by 2050, a large portion of the global population will need assisted reproductive technology to procreate. I talked to Swan to learn more about these chemical exposures and what can be done to avert an infertile future.
Posted by:Besoeker

#15  ^^^!!!
Posted by: Abu Uluque   2021-02-26 15:15  

#14  Well fuck!

Posted by: CrazyFool   2021-02-26 14:04  

#13   like the 60 vaccines they get before puberty???

49 Pan, thimerisol was removed from all vaccines in 2001. Getting vaccinations should have no more effect on a growing body than being exposed to the illnesses themselves, with considerably fewer side effects like sterility, blindness, deafness, and brain damage.

And what 60 vaccines are you referring to? There are multiple doses of some vaccines, to get the full effect, but that isn’t the same as being exposed to 60 different diseases.
Posted by: trailing wife   2021-02-26 14:02  

#12  Keeping kids in school until they're 24 or 25 years old and well past their prime reproductive age might have something to do with it.
Posted by: Abu Uluque   2021-02-26 14:01  

#11  How much has the average age of the test populations increased in three generations? What proportion of the current generation who are not fat have lower sperm counts? What happens to the sperm counts of fat, flabby men who lose significant weight? What happens when the flabby ones become fit? It doesn’t take an expensive gym membership — aerobic push-ups are still Nature’s most perfect exercise, followed by walking.

Why have we not read numerous horrified articles about increasing numbers of men needing expensive artificial methods to get their wives pregnant in the four years since this study came out, or at least going to sperm banks?

The headline is click bait — plenty of men who get vaccinations and drink tap water are fathering plenty of children without any apparent problems, so their untroubled descendants will inherit their resistance to whatever is causing this problem.
Posted by: trailing wife   2021-02-26 13:55  

#10  Exposure to common chemicals, like the 60 vaccines they get before puberty???
Posted by: 49 Pan   2021-02-26 12:17  

#9  Not letting boys do boy things stifles their ball development, just like any other organ in the body.

Bring back the spirit which bade men to spend 12 months on a leaky boat to wind sail halfway around the world to see a solar eclipse.
Posted by: swksvolFF   2021-02-26 11:25  

#8  Seems the least desirable parts of the gene pool procreate with unfortunate fecundity...
Posted by: M. Murcek   2021-02-26 10:49  

#7  With 78 genders, it is a bit complicated.
Posted by: g(r)omgoru   2021-02-26 09:45  

#6  population will need assisted reproductive technology to procreate

A pleb non-scientist, and total bastard I'm imagining a sort of linked exoskeleton harness that has the motions programmed into it, and you may dial in a nice steady rhythm.
Posted by: Dron66046   2021-02-26 09:43  

#5  /\ I've often wondered if it could be something in the waters.
Posted by: Besoeker   2021-02-26 08:46  

#4  One of the chemicals in ordinary drinking water is estrogen which comes from livestock excrement and (in much less quantity) urine from women taking birth control.

water treatment plant remove a lot of it but not all and there is probably at least 10x as much of it now as there was 50 years ago
Posted by: Lord Garth   2021-02-26 08:40  

#3  I recommend a QC program that will enable our remaining reproductive capabilities be tightly monitored and controlled.
Posted by: Besoeker   2021-02-26 08:28  

#2  True if you are a soy boy or riot grrrl. Hit the gym and make yourself presentable. Otherwise, it's internet prawn for you.
Posted by: Ebbereger Unainter6303   2021-02-26 08:12  

#1  Perhaps he has discovered some celestial experiments are simply dead ends.
Posted by: Besoeker   2021-02-26 07:45  

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