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 How Prescription Drugs End Up In Our Drinking Water What happens to the hundreds of millions
of prescription drugs and the over-the-counter medications that are
swallowed daily?
Well, they eventually return as a chemical cocktail flowing out of your kitchen
tap!
The
answer: they go out through the plumbing. Being flushed down the toilet
and into the sewage system, 90 per cent of every drug swallowed is
either excreted, totally unchanged, or is broken down into active
metabolites. They then continue on their way into your water supply to
eventually return as a chemical cocktail flowing out of your kitchen
tap!
In
addition to pharmaceutical drugs, there’s another group of chemicals
sneaking down the drain. More than 10,500 chemical ingredients are used
to manufacture what is collectively known as personal care products.
These products include moisturisers, cleaners, bubble baths, shampoos,
fragrances, deodorants, mouthwashes and sunscreens etc. Research has
shown that vast numbers of these chemicals can alter our endocrine,
neurological, respiratory and immune systems.
This
collection of chemical compounds has been officially classified as
Pharmaceutical and Personal Care Pollutants (PPCPs). PPCPs comprise a
very broad, diverse collection of thousands of chemical substances,
including prescription and over-the-counter therapeutic drugs,
fragrances, cosmetics, sun-screen agents, diagnostic agents,
nutraceuticals, biopharmaceuticals, and many others. This broad
collection of substances refers, in general, to any product used by
individuals for personal health or cosmetic reasons. Until recently
little if any thought had been given to what may result from the
staggering quantities of chemicals that are washed down the toilet , or
rinsed from our bodies.
It is estimated in the Environmental Health Perspectives Supplements, 1999, that ‘the
amount of pharmaceuticals and personal care products entering the
environment annually is about equal to the amount of pesticides used
each year."
Many pharmaceutical
drugs and personal care products have persistent chemicals that remain
biologically active even after being relegated to landfills and water
systems. Hospitals, doctors’ offices, veterinary clinics, farms and
even the average home are all contributors to the PCPP overload.
Other
sources of PPCPs include unused medications (which are commonly flushed
down the toilet), leaking septic systems or discharge from wastewater
treatment plants. It’s indeed a sobering thought to realise that our
personal grooming habits as well as our reliance on pharmaceutical
drugs may, however unwittingly, contribute to global PPCPs pollution.
The
fact is no one really knows to what extent these chemical mixtures
might be altering our health. Many chemicals are designed to profoundly
affect humans’ physiology. Unlike pesticides, drugs and personal care
products, these mixtures have not been examined for their effect on the
environment. This is surprising, especially since certain
pharmaceuticals are designed to modulate endocrine and immune systems.
Unintended Consequences
In
the 1980s the issue of PCPPs emerged as a serious area of investigation
in Europe. A German study in Small Flows Quarterly by Nikki Stiles,
found PCPPs in treated and untreated sewage effluent, surface water,
ground water and drinking water. Most commonly found medications were
anti-inflammatory and pain-killing drugs, cholesterol-lowering drugs
anti-convulsants and oral contraceptives. Samples from 40 German rivers
and streams turned up residues of 31 different PPCPs.
More
recent findings in Berlin found significant amounts of antibiotics,
ibuprofen, cholesterol-lowering drugs, hormones (oestrogen), and
chemotherapy agents in that city’s ware supply. British scientists
estimate that more than a ton of aspirin and a ton f morphine
derivatives flow down just one small river in north east London every
year.
Samples
from 139 US streams showed detectable, although minute, quantities of
PPCPs. The most frequent were steroid hormones and non-prescription
drugs. Antibiotics, prescription medications, detergents fire
retardants, pesticides and natural and synthetic hormones were also
present.
Between
30 and 90 per cent of most antibiotics given to humans and animals is
excreted with the urine. The problem is particularly acute in the fish
and farming industry where, according to an article in New Scientist,
1999, 70 to 80 per cent of antibiotics end up in the environment.
Would you like birth control pills with your coffee?
Synthetic
steroid hormones are taken by one hundred million women wordwide as
oral contraceptives or hormone replacement therapy. Both natural and
synthetic oestrogen as well as oestrogen-mimicking chemicals from
degradation of plasticizers enter sewage treatment plants.
A
Canadian study provided concrete evidence of just what exposure to
these chemicals portends. For three years, Canadian scientists added
birth-control pills into a pristine Ontario Lake set aside for research
to measure this impact. The results: all male fish in the lake – from
tiny tadpoles to large trout – were feminized egg proteins were growing
abnormally in their bodies) This was an unmistakable sign of hormone
disruption. Feminized male fish have now been found in rivers and
streams worldwide.
Theo Colborn, author of Our Stolen Future, is worried about pharmaceutical oestrogens mixing with chemicals already present in streams.
‘You
can liken it to the side effects of a prescription drug – you don’t
know how it’s going to interact with the over –the-counter drugs that
you’re taking. For example bisphenol A, a compound of plastic causes
female mice to reach puberty earlier than normal. Bisphenol A forms a
weak bond with the body’s oestrogen receptors. It can scramble a cell’s
natural communication system and cause it to replicate too quickly
That, in turn, raises concerns about breast cancer in women. What
happens if this compound, which is active at low levels of exposure,
combines with oestrogen from a birth control pill in the water? At this
point, it’s still unclear. It cold have long-term health effects.’ (4)
Could
oestrogen-laced water contribute to shaply falling human sperm counts?
In Europe, researchers have tied a decline in male sperm count to
levels of oestrogenic hormones in the environment. Unfortunately, the
rising numbers of breast and uterine cancers, early puberty, and
hypospadias (a birth defect of the urethra and the penis), reveal a
most disturbing picture. It appears that this unnatural exposure to
potent oestrogen hormones as well as oestrogen mimics could be
seriously and irrevocably altering critical hormonal signalling for
adults as well as vulnerable infants and children.
Antibiotics – too much of a good thing
Detection
of antibiotics in drinking water is of particular concern. The presence
of these chemicals in the environment can lead to the development of
resistant bacterial strains, contributing to antibiotic resistance.
Some of the antibiotics detected were Class 1 drugs, (the one used when
other antibiotics don’t work).
A
bacteria-phobic public now uses millions of pounds annually of
triclosan, a broad-spectrum anti-microbial agent. Triclosan is a
derivative of the herbicide 2,4-D. It is the active ingredient found in
a plethora of products such as anti-bacterial soaps, deodorants,
mouthwashes, sponges and household cleaners. Triclosan’s popularity has
contributed to the antibiotic resistance problem.
If
triclosan-initiated antibiotic resistance wasn’t bad enough,
researchers found that when triclosan in water was exposed to sunlight,
it converted into a dioxin. When first exposed to sunlight, triclosan
becomes a mildly toxic chemical. The problem occurs when it becomes
treated with chlorine at water treatment plants; it then breaks down to
something even more potent. (5)
What
is particularly ironic is that the use of triclosan-treated products
has never been proven to be superior to regular soap and water.
Just drink your prozac and call me in the morning
In
2004, major headlines in Britain announced that Prozac was found in
drinking water. This situation has been described as a ‘hidden mass
medication of the unsuspecting public’. Since there is no way to
monitor for levels of Prozac or other PPCPs, a serious public health
crisis is brewing. In the UK, there has been a 166 per cent increase
antidepressant prescriptions since 1991 – up to 24 millions
prescriptions a year. The most popular kind is the selective serotonin
reuptake inhibitors (SSRIs), which include Prozac, Zoloft, Luvox, and
Seroxat/Paxil.
What
might result from Prozac-aced water? US researchers found traces of
Prozac and antidepressants in the livers, muscles, and brains of
bluegill fish in Texas. In addition, they found traces of Prozac in
Prozac-free people who ate the fish.(6)
Low-level
exposure to fluoxetine, the active ingredient of Prozac, delays both
development in fish and metamorphosis in frogs. The researchers
strongly suspect that results imply a disruption of thyroid function.
‘We
know that the thyroid levels peak with metamorphic climax, when the
legs and arms form and the tail resorbs. We believe that fluoxetine
inhibits the thyroid.’ (7)
When
it comes to the possible side effects of PPCPs on humans and aquatic
life, there are more questions than answers. It is a truly daunting
task to assess the possible harmful effects of just one PPCP much less
the exposure to thousands. And what might be the consequence of al
those incalculable permutations of drug mixtures?
No one really knows.
Where do we go from here?
The problem of pharmaceutical and personal care pollutants has been clearly identified; the tricky part is what to do about it.
One
obvious action would be to choose non-toxic alternatives. Choosing
natural therapies replaces the dependency on pharmaceutical drugs. Also
find your political voice on a local and national level as well as
supporting environmental organizations.
One
practical solution to the flush problem woud be a pharmaceutical
take-back programme – like those implemented in several European
countries, Australia, and Canada.
What about water sewage plants?
It
is a well-established fact that conventional sewage treatment
technologies do not completely remove drug and chemical residues. While
other methods, such as activated carbon filtration or treatment with
ultraviolet light, could effectively remove PPCPs, they are costly
approaches. So, if we can’t rely on the municipal water treatment
systems, it’s really up to each person to find their own solutions. It is not advisable to drink tap water, for example – a much healthier choice would be a reputable brand of bottled spring water.
The
most effective water purification system for removing PPCPs is an
activated carbon filtration system. Investing in a high quality
whole-house water system using an activated carbon filtration method
which purifies all the water used in your home drinking, bathing, and
washing, would be your best line of defence, if your budget can manage
it. At the very least use an activated carbon filter such as reverse
osmosis.
[Editors Note: A Water Ionizer
is considered by experts to be the very best water purification system
- it filters and ionizes the water to remove all pollutants and harmfull
acid molecules from the water, but leaves all the beneficial substances
intact. A reverse osmosis or water distiller can leach essential minerals from the body. ]
The
day may come will take responsibility for the life cycle of their
products; when the Environmental Protection Agency and Food and Drug
Administration will enact protective regulations for PPCPs; and new
sewage treatment technologies will be developed that safely remove
PPCPs. But for fight now, it seems that we’re on our own.
In
a world of connectedness, we are again painfully reminded that nothing
we do exists in isolation. Our most ordinary choices, in this case the
drugs we ingest and the personal care products we use, may have
lifelong consequences not just for us but also for all the unsuspecting
people and wildlife downstream. Remember, everyone lives downstream
from someone,
More i nformation
Sherrill Sellman, N.D, is the author of Hormone Heresey and What Women MUST Know To Protect Their Daughters From Breast Cancer.
Her free monthly e-Digest is available from www.ssellman.com
.
1. www.waterindustry.org
2. www.water-ed.org
3. www.gsenet.org
4. www.keepmedia.org
5. www.eces.org
6. www.eces.org/articles
7. www.usawaternews.com
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