Two laboratories come up with shocking results. Experts
blame pollution, construction activity and ayurvedic
medicines for toxicity.
It's been 10 years since lead-free petrol was introduced. Lead
in pencils is gradually being replaced by graphite and clay,
and most paint and cosmetic companies are now going out
of their way to convince consumers that their product is
'metal-free'. And yet, lead poisoning continues to top the
chart of heavy metal toxicity in humans. Medical experts
claim extreme level of pollution, construction activity and
haphazard use of ayurvedic medicines are the culprits.
Figures from the city-based laboratories reveal the
worrisome trend. Of the 600 odd samples received every
month by a diagnostics centre for Atomic Absorption
Spectroscopy, which detects metal content in body fluids,
about 350 contain lead. It is followed by copper (125), zinc
(50) and other metals such as arsenic, mercury, aluminium
and chromium.
Even a small amount of exposure to lead can lead to long-
term health hazards, especially in children. It is known to
cause anaemia, hypertension, impaired fertility and so on.
Doctors say foetuses can be affected by lead exposure, as it
reaches them through the placenta.
In addition, lead does not allow other metals such as zinc
and copper to be flushed out of the body, leading to their
build-up as well. The dangerous metal can remain inside the
body for more than 45 years.
Apart from being carcinogenic or toxic, most metals
adversely affect the central nervous system, kidneys, liver ,
skin, bones and teeth.
"The number of samples with metal content has gone up
over the years. We started in 2010 with about 250 samples
monthly and today we screen around 600," said a Dr.
Another laboratory, tests about 250 samples in a month, of
which 150 contain lead. "Most samples are from people
working in industrial set-ups, which expose them to such
metals on a daily basis. Samples with arsenic generally
come from people who use ayurvedic drugs containing
heavy metals," said a Dr.
While advanced technology is available to test the metal
content, many metals generally go undetected. That is
because the process to detect each metal is different and
doctors check only for that metal which is producing
adverse symptoms. Ayurvedic medicines have been blamed
for high amount of metals in them. The practitioners,
however, claim that their medicines were always made with
various metals but qualified practitioners know how much
to prescribe.
According to a consultant physician , these metals are
present in food, water, even the very air we breathe in.
"They first enter the blood stream. Liver tries to process
these metals out of our body, which puts pressure on it. It
can cause jaundice and liver cell disease. These metals can
cause renal failure and neurological problems too," said
a Dr.
According to the Dr., if detected in the initial stages, patient
can be provided with metal chelationtherapy, which helps
remove these toxins in two-three months.
Heavy metal poisoning
absorption through the skin or mucous membranes. They
are then stored in the body's soft tissues. Once absorbed, they
compete with other ions and bind to proteins, impairing
enzymatic activity and damaging many organs.
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