Declining Fertility in the World

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Definitely been a decline in number of children in a family since the 1950s because now we have television and the internet.
People don’t have all that spare time to fuck now
 
I think the high cost of living, higher BMIs, and access to birth control have made the strongest impact. Also, exposure to environmental toxins.

pubmed.ncbi.nlm.nih.gov

Combined exposures to bisphenols, polychlorinated dioxins, paracetamol, and phthalates as drivers of deteriorating semen quality - PubMed

Tolerable exposures to substances associated with deteriorations of semen quality are exceeded by a large margin. Bisphenols, polychlorinated dioxins, phthalates and analgesics drive these risks. Dedicated efforts towards lowering exposures to these substances are necessary to mitigate risks.
pubmed.ncbi.nlm.nih.gov pubmed.ncbi.nlm.nih.gov
 
This is from an article in Forbes

Studies show that men’s testosterone levels have been declining for decades. The most prominent, a 2007 study in the Journal of Clinical Endocrinology and Metabolism, revealed a “substantial” drop in U.S. men’s testosterone levels since the 1980s, with average levels declining by about 1% per year. This means, for example, that a 60-year-old man in 2004 had testosterone levels 17% lower than those of a 60-year-old in 1987. Another study of Danish men produced similar findings, with double-digit declines among men born in the 1960s compared to those born in the 1920s.

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You're Not The Man Your Father Was

Traditional ideas about manhood are getting a shakeup as today’s lower-androgen men grapple with both physiological and social change.
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My wife always thought the world was becoming over populated growing up in Buenos Aires. But when she moved to Texas she could not believe the mass of land outside of the major cities we have that are just are almost endless. The King Ranch for instance is 825,00 acres which is larger than Rhode Island. We have several other ranches in Texas that are equally as large. Many of these are in prime areas. If you leave Houston and drive any direction you will see acres of land most of which is not lived on.
 
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The problem is the more productive nations which drive the worlds progress are seeing their population shrink. In a perfect scenario as long as every society across the globe were on the same page that would be ok. Nations that can’t feed themselves are seeing population booms (ironically due to western intervention such as medicine etc.) which leads to another set of issues.


sammmy said:
Fertility must go down. Earth is already overcrowded and there are wars for resources.
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Graham said:
The problem is the more productive nations which drive the worlds progress are seeing their population shrink. In a perfect scenario as long as every society across the globe were on the same page that would be ok. Nations that can’t feed themselves are seeing population booms (ironically due to western intervention such as medicine etc.) which leads to another set of issues.
Click to expand...
I do think there are tons of issues with toxins in our environments which contribute to the problem, but there is also evidence to suggest it may be inevitable. I was thinking about it the other day and it almost seems like a built-in balancing mechanism for population control when a species is able to overcome all of the other balancing mechanisms like lack of resources, disease, predators, environment, etc.


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What Humans Can Learn from Calhoun's Rodent Utopia

<p>Image Credit: Public Domain (via Smithsonian Magazine)</p> <p>Between 1968 and 1970, American ethologist John B. Calhoun (1917-1995) conducted a behavioral study of captive mice within a nine-square-foot enclosure at a rural facility
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Between 1968 and 1970, American ethologist John B. Calhoun (1917-1995) conducted a behavioral study of captive mice within a nine-square-foot enclosure at a rural facility in Poolesville, Maryland. Within the enclosure known as Universe 25, several pairs of mice bred a population, which ultimately swelled to 2,200. Eventually, they established social orders that created inside and outside factions, and soon mating ceased altogether.

The study confirmed his grim hypothesis, based on earlier studies of the Norway rat in small settings. In his theory, he suggested that overpopulation spawns a breakdown in social functions. That, in turn, inevitably leads to extinction.

Though wildly controversial when first made public, Calhoun's theory has raised concern over the years that the social breakdown of Universe 25 could ultimately serve as a metaphor for the trajectory of the human race. Consequently, the “rodent utopia project” has been a subject of interest among architects, city planning councils, and government agencies around the world.

EARLY RODENT STUDIES​

Calhoun began his experimental research on rodents in 1947 when he studied an enclosed group of Norway rats at a barn in Rockville, Maryland. Supplying the critters with unlimited food and water, he expected to see their population swell to 5,000 over the course of the 28-month experiment. However, the population capped out at 200 after subdividing into smaller groups, each of which comprised merely a dozen individuals.

Continuing with these studies during the 1950s, Calhoun set up a more complex enclosure to examine how further groups of rodents would behave in a sterilized, predator-free environment. Over the course of these experiments, the same sequence of events would transpire each time:

  • The mice would meet, mate and breed in large quantities.
  • Eventually a leveling-off would occur.
  • After that, the rodents would develop either hostile and cliquish or passive and anti-social behaviors.
  • The population would trail off to extinction.
In 1962, Scientific American published Calhoun's observations from his research in the article "Population Density and Social Pathology," wherein he coined the phrase "behavior sink" to describe the results of overcrowding — namely the breakdown of social functions and the collapse of populations — in the enclosed rodent environment. Hitting the public just as vast urban expansion saw growing numbers of college grads flocking to big cities for work opportunities, many viewed the article as a warning of what could happen to the human race if populations continued to rise at their current rate.

Expanding on his earlier studies, Calhoun devised his ultimate research experiment. In Universe 25, a population of mice would grow within a 2.7-square-meter enclosure consisting of four pens, 256 living compartments, and 16 burrows that led to food and water supplies.

With a plague-free environment, a plenitude of comforts, a lack of predation, and an unlimited supply of consumables, the mice would enjoy all the luxuries equivalent to modern human life. Calhoun initiated the experiment with four pairs of healthy mice, which were set loose into the enclosure to begin the new society.

During the first 104 days — a phase Calhoun dubbed the "strive period" — the mice adjusted to their new surroundings, marked their territory, and began nesting. This was followed by the "exploit period," which saw the population double every 55 days. By the 315th day, Universe 25 contained 620 mice.

Despite the abundance of space throughout the enclosure — each compartment could house up to 15 individuals, and the overall enclosure was built for a capacity of 3,000 — most mice were crowding select areas and eating from the same food sources. As it turned out, the act of eating came to be viewed as a communal activity, which caused most of the mice to favor the same few compartments.

All of this huddling, however, led to a drop in mating, and the birthrate soon fell to a third of its former level. A social imbalance also took place among the mice:

  • One-third emerged as socially dominant.
  • The other two-thirds turned out less socially adept than their forebearers.
  • As bonding skills diminished among the mice, Universe 25 went into a slow but irreversible decline.

SOCIAL STATUS IN UNIVERSE 25​

By Day 315, behavior disparities between males of high and low status became more pronounced. Those at the bottom of the pecking order found themselves spurned by females and withdrew from mating altogether. Having no roles to fulfill within the society of mice, these outcast males wandered apart from the larger groups to eat and sleep alone — and sometimes fight with one another.

The alpha males, by contrast, became more aggressive and pugnacious, often launching into violence with no clear provocation or motive. At times, these males would roam around and indiscriminately rape other mice, regardless of gender. Meanwhile, the beta males — those ranked between the aggressive alphas and outcast omegas — grew timid and inert and often wound up being the passive recipients of violence. In several instances, bloodbaths ended with a cannibalistic feast for the victors.

With male mice abandoning their traditional roles in Universe 25, the females were left to fend for their nests. Consequently, many females adopted more aggressive forms of behavior, which would sometimes spill over into violence toward their young. Others would refrain from motherly duties altogether, banishing their unraised litters and withdrawing from further mating, resulting in serious consequences:

  • In some compartments, the infant mortality rate topped 90 percent.
  • Calhoun named this the "stagnation phase," alternately known as the "equilibrium period."
  • He attributed the overly aggressive and passive behavioral patterns to the breakdown of social roles and rampant over-clustering.

A SPIKE IN THE MORTALITY RATE​

By the 560th day, the population increase had ceased altogether as the mortality rate hovered at 100 percent. This marked the start of the "death phase" — aka the "die period" — in which the rodent utopia slid toward extinction. Amidst the violence, hostility, and lack of mating, a younger generation of mice reached maturity, having never been exposed to examples of normal, healthy relations. With no concept of mating, parenting, or marking territory, this generation of mice spent all of their waking hours eating, drinking, and grooming themselves.

In reference to their perfected, unruffled appearances, Calhoun called these mice the "beautiful ones." Living in seclusion from the other mice, they were spared the violence and conflict that waged in the crowded areas, yet made no social contributions.

According to Calhoun, the death phase consisted of two stages: the "first death" and "second death." The former was characterized by the loss of purpose in life beyond mere existence — no desire to mate, raise young or establish a role within society. This first death was represented by the lackadaisical lives of the beautiful ones, whereas the second death was marked by the literal end of life and the extinction of Universe 25.

THE SUN SETS ON UNIVERSE 25​

Extending on his observations of the beautiful ones, Calhoun later opined that mice, as humans, thrive on a sense of identity and purpose within the world at large. He argued experiences such as tension, stress, anxiety, and the need to survive make it necessary to engage in society.

When all needs are accounted for, and no conflict exists, the act of living is stripped to its barest physiological essentials of food and sleep. In Calhoun's view:

  • Herein is the paradox of a life without work or conflict.
  • When all sense of necessity is stripped from the life of an individual, life ceases to have purpose.
  • The individual dies in spirit.
Gradually, the mice that refused to mate or engage in society came to outnumber those that formed gangs, raped and plundered, and fed off their own. The last known conception in Universe 25 occurred on Day 920, at which point the population was capped at 2,200, well short of the enclosure's 3,000 capacity.

An endless supply of food, water, and other resources were still there for the mice, but it didn't matter. The behavior sink had set in, and there was no stopping Universe 25 from careening to its self-made demise. Soon enough, there was not a single living mouse left in the enclosure..

FAILED SALVAGE ATTEMPT AND CONCLUDING OBSERVATIONS​

Before the rodent utopia imploded entirely, Calhoun removed some of the beautiful ones to see whether they would live more productive lives if released into a new society, free of social strife and carnage. Placing these mice in a fresh setting with few pre-existing residents — a scenario similar to that which greeted the initial pairs placed in Universe 25 — he expected the beautiful ones to awake from their asocial haze and answer nature's call to populate the barren environment.

However, the relocated mice showed no signs of change from their earlier behavioral patterns. Refusing to mate or even interact among their new peers, the reclusive mice eventually died of natural causes, and the fledgling society folded without a single new birth.

In Calhoun's view, the rise and fall of Universe 25 proved five basic points about mice, as well as humans:

  1. The mouse is a simple creature, but it must develop the skills for courtship, child-rearing, territorial defense, and personal role fulfillment on the domestic and communal front. If such skills fail to develop, the individual will neither reproduce nor find a productive role within society.
  2. As with mice, all species will grow older and gradually die out. There is nothing to suggest human society isn't prone to the same developments that led to the demise of Universe 25.
  3. If the number of qualified individuals exceeds the number of openings in society, chaos and alienation will be the inevitable outcomes.
  4. Individuals raised under the latter conditions will lack any relation to the real world. Physiological fulfillment will be their only drive in life.
  5. Just as mice thrive on a set of complex behaviors, the concern for others developed in post-industrial human skills and understandings is vital to man's continuance as a species. The loss of these attributes within a civilization could lead to its collapse.
 
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The Impact of Drugs on Male Fertility

The study shows that psychoactive drugs can harm male fertility by affecting sexual urge, androgen synthesis, spermatogenesis, and sperm quality. These drugs cause testicular toxicity, oxidative damage, inflammation, and apoptosis. They also suppress the hypothalamic-pituitary–testicular axis...
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SOO many factors! would be interesting to see a debate about testosterone levels dropping if is in fact as large as some studies say and or what factors (ie is it just sugar/obesity? mostly?).

From my lived experience all my friends that wanted kids were able to relatively easily, which is good sign cant be THAT bad.

But obesity is prob a big one, along with those phthalates on EVERYTHING along with roundup etc I think is pretty clear its messing things up health/hormone wise. I mean most of the pesticides/herbacides are hormone based or shut off enzymatic activity etc and certainly is cross over between plant hormones affecting mammals.

Elon musk says we have a depopulation problem not an overpopulation problem.. which is interesting, forget his actual points if he is saying population is actually going to start deceasing or we need more and more people to keep things going as folks live for so much longer now. different take than most people as only so much resources to sustain people, maybe he is banking on technology allowing people to be more efficient in resource uptake, and technology increases faster with more people to do it.. I could be very wrong, but certainly lines up with the point of this thread that fertility is dropping!

folks always think gov wants to depopulate but population is #1 for power and money, governments want MORE AND MORE people not less, same with any corporation.
 
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