The Animal-Threatening Pollution
That Few People Talk About
June 23, 2015
Story at-a-glance
-
Otters eat fish and crustaceans, food sources that
are often contaminated with drugs and other
chemicals from the water they inhabit
-
The presence of two types of non-steroidal
anti-inflammatory drugs (NSAIDs) – diclofenac and
ibuprofen – was detected in otter fur
-
Otters, which were only recently brought back from
the brink of extinction, could be facing unknown
health threats from pharmaceutical pollution in the
environment
By Dr. Becker
Whenever you take a medication, 30 percent to 90 percent gets
excreted when you use the bathroom. Other medications get
flushed down the toilet as a means of disposal (not a very
environmentally friendly one), while drugs given to agricultural
animals also contaminate surrounding waterways.
We’re now at a point where pharmaceuticals in the environment
may not only affect human health but the health of wildlife as
well. Millions of
vultures died off in Asia after exposure to an
anti-inflammatory painkiller used in cows. Male fish have also
been observed with feminized characteristics due to exposure to
synthetic estrogens in the birth control pill.1
Otters, sadly, may be next in line, as researchers have
discovered traces of drugs in their fur, which could be having
serious consequences. As reported by the campaign group Chem
Trust:2
“…[M]any other more subtle effects have been reported
in animals and there is a paucity of monitoring data, such
that there is little doubt that other pharmaceuticals will
also be found to be causing effects in the future.
Aquatic wildlife is exposed to low levels of many
pharmaceuticals, and as many rivers and groundwaters are
also used as drinking water for humans, or as irrigation
water for food crops, measures which reduce wildlife
exposure will also benefit people.”
Two Types of Painkillers Detected in Otters’ Fur
Otters eat fish and crustaceans, food that is often
contaminated with drugs and other chemicals. In 2011, research
was published showing the presence of two types of non-steroidal
anti-inflammatory drugs (NSAIDs) – diclofenac and ibuprofen – in
otter fur collected from six counties in England.
As Chem Trust explained, these drugs only add to the chemical
load to which otters are exposed to in their everyday
environment. This is especially tragic since otters have already
been brought back from the brink of extinction once before.
Between the 1960s and 1980s, otters declined in Western Europe
and North America.
Polychlorinated biphenyls (PCBs), which are now banned but
formerly were used for many industrial purposes (including
electrical oils, lubricants, adhesives, and paints), were to
blame. In addition to causing cancer and adverse effects to the
immune system, PCBs are endocrine-disrupting chemicals capable
of harming the reproductive system.
According to Chem Trust:3
“Subtle effects on the reproductive organs of otters
have also been noted in those from polluted areas. Organ
weights were compared between otters that had died in the
Lower Columbia River and those from other geographical
areas.
Baculums (penis bones) and testicles of young males
were shorter or smaller than in animals of the same age
class from non-polluted areas.”
In addition to pollution, habitat loss and hunting have also
put otters at risk. In the US, such factors have reduced the
otter’s range to one-third of its original size. The US
Environmental Protection Agency (EPA) noted:4
“Humans are probably the most important enemy of the
river otter, affecting this species through direct (i.e.,
trapping) and indirect (habitat alteration, pollution)
means.”
Other Species at Risk from Pharmaceutical Pollution
Pharmaceutical pollution is by no means a threat directed at
only one species or one country. It’s a worldwide problem, and
one that has the potential to threaten virtually every species
on the planet.
As recently reported in the journal Philosophical
Transactions B:5
“Expanding and aging human populations require ever
increasing amounts of pharmaceuticals to maintain health.
Recent studies have revealed that pharmaceuticals, both
human and veterinary, disperse widely in aquatic and
terrestrial environments with uptake into a range of
organisms.
Pharmaceuticals are designed to have biological
actions at low concentrations rendering them potentially
potent environmental contaminants. The potential risks that
pharmaceuticals pose to the health and long-term viability
of wild animals and ecosystems are only beginning to be
assessed and understood.”
For instance, exposure to low concentrations of psychiatric
drugs can alter foraging patterns, activity levels and
risk-taking behaviors in fish and birds.6
The common antidepressant fluoxetine has been found to cause
starlings to eat less,7
and synthetic estrogens in birth control pills reduce fish
populations in lakes.8
Changes such as these have the potential to affect the entire
ecosystem.
As reported in The Guardian:9
“Another new study, led by Karen Kidd at the
University of New Brunswick, showed synthetic estrogen used
in the birth control pill not only wiped out fathead minnows
in lakes used for experiments in Ontario, but also seriously
disrupted the whole ecosystem.
The lakes’ top predator – trout – declined by 23-42%,
due to the loss of the minnow and other prey, while insects
increased as they were no longer being eaten by the
minnows.”
What Can Be Done to Help Stop Pharmaceutical Pollution?
On an individual level, you can help by not flushing unused
medications down your toilet or drain. What should you do with
them instead? Some states are considering legislation that would
require drug manufacturers to develop and pay for a program to
collect residents’ unused prescription and over-the-counter
drugs, and safely dispose of them.
As it stands, however, the EPA and other government agencies
have released the following guidelines for “safely” disposing of
drugs:
- Throw most drugs in the trash after crushing them or
dissolving them in water, mixing them with kitty litter,
coffee grounds or other unappealing materials, and placing
the mixture in a sealed plastic bag.
- Remove and destroy any prescription labels before
throwing away the containers.
- In some states, pharmacies can take back medications.
When in doubt, you should ask your pharmacist for advice.
Unfortunately, some of these suggestions merely move the
environmental peril from one place to another -- such as
diluting medicines in water and mixing them in garbage that
eventually ends up in a landfill anyway … but it does stop the
drugs from travelling through water treatment systems that are
ill-equipped to treat them.
On a larger scale, Chem Trust recommends that new medicines
be designed so they don’t persist in the environment, and sewage
treatment works be improved to treat medications that come
through.
The organization continued:10
“In addition, the European Union should strengthen
laws relating to the pollution of rivers with
pharmaceuticals, and there also needs to be better
international coordination on this issue.”
© Copyright 1997-2015 Dr. Joseph Mercola. All Rights Reserved.
http://healthypets.mercola.com/sites/healthypets/archive/2015/06/23/drugs-in-otter-fur.aspx
|