• Page:
  • 1

TOPIC: Gender-bending fish downstream of WWTPs

Gender-bending fish downstream of WWTPs 09 Jan 2014 23:56 #6940

  • KeithBell
  • This button allows you to contact another forum user directly by sending a private message.
  • Posts: 132
  • Likes received: 17
  • Karma: -10
Most focus by far in this area of research is about endocrine disrupting chemicals.

But the real problem may be natural estrogens excreted from everyone's intestines. All steroid hormones are derived from cholesterol and its metabolite, coprostanol. Coprostanol is already used as indicator of fecal pollution where testing can distinguish human from livestock waste.

There are no studies about fecal sterols in treated drinking water. This is admitted by the US EPA.


Over 70% of smallmouth bass are intersex in parts of the Mississippi River and extremely high rates throughout the country per United States Geological Survey (USGS).

Fish feminization is one thing, but my hometown of Chicago sends sewage down the mighty Mississippi River into the Gulf of Mexico feeding algae blooms, creating a massive, toxic, low oxygen Dead Zone where female fish develop testes:

Meanwhile, there is a human global infertility epidemic, both male and female.

Hormonal pollution is barely on the map.
Last Edit: 10 Jan 2014 03:32 by KeithBell.

Re: Gender-bending fish downstream of WWTPs 10 Jan 2014 17:45 #6944

  • KeithBell
  • This button allows you to contact another forum user directly by sending a private message.
  • Posts: 132
  • Likes received: 17
  • Karma: -10
The synergistic effects of exposure to natural estrogens compounded with manmade estrogenic chemicals is being observed worldwide in many species.

Occurrence of Estrogen in Wastewater Treatment Plant
and Waste Disposal Site Water Samples


Sanitation-challenged India

Is this a sanitation issue?

Re: Gender-bending fish downstream of WWTPs 12 Jan 2014 16:40 #6955

  • KeithBell
  • This button allows you to contact another forum user directly by sending a private message.
  • Posts: 132
  • Likes received: 17
  • Karma: -10
So, if all steroid hormones are derived from cholesterol, what regulates cholesterol? Microbes.

How interesting that probiotic supplements are known to lower cholesterol:

Gender change is big business in the world of tilapia where all fish are made male:

The alphaproteobacteria, Wolbachia, is famous for regulating gender in host offspring:

Now let's get into the territory of the human womb, still commonly believed sterile. How might microbiota influence gender identity? The womb is not sterile and was never meant to be sterile:

I believe human brain development in the womb relies on omega-3 fatty acids of microbial origin, both maternal and fetal gastrointestinal tract. The fetal liver and GI tract develop long before the fetal brain.

In the third trimester, the fetal brain triples in weight while the mother's flora shifts to a diabetic state:

The section of the brain's hypothalamus regulating circadian rhythm and many other things including important hormones, is the suprachiasmatic nucleus (SCN), curiously doubled in size/cells in homosexual men:

Perhaps the only decent review of how gut microbiota regulate gut hormones while most experts still believe hormonal changes seen in diabetes have nothing to do with microbes: www.medscape.com/viewarticle/714569_4

Gender issues overlap with mental and physical health issues illustrated by commonalities in obesity with autism, homosexuality (obesity is studied in the lesbian population), anorexia . . . all matters of microbial imbalance.

The key is to maintain diversity, both human and microbial, not possible in a world defecating in water.
Last Edit: 12 Jan 2014 16:45 by KeithBell.
  • Page:
  • 1
Moderators: arno
Time to create page: 0.41 seconds