A University of Adelaide forensic pathologist is warning that
potentially harmful substances found in herbal medicines may be playing a
bigger role in deaths of 'health tourists' than previously thought.To
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Professor Roger Byard is calling for closer checks during
post-mortems for the presence of drugs and adulterants that originate
from herbal remedies."There is a possibility that harmful materials
found in herbal medicines are either contributing to, or causing, deaths
of overseas travellers," says Professor Byard.
'These factors should be considered in all medical and legal cases
involving recent overseas travel, particularly to Asian destinations."
As part of health and wellness tourism, Western travellers to many
Asian countries now often visit herbal centres. Free health checks may
be performed at these centres and herbal products are offered for sale.
They offer hope to a growing number of people looking for a cure for
their health problems.
"This type of health tourism is based upon learning about and
consuming traditional medicinal herbs and is an important part of the
worldwide medical tourism industry," says Professor Byard."Patients
wrongly believe that they are being treated without using harmful
chemicals or drugs.
Studies have found some herbal remedies have been adulterated with
approved or banned drugs and even toxic heavy metals. Adulterants have
been linked to a range of side effects of varying severity including
hypertension, heart problems, psychiatric disorders and in some
instances even deaths.
"The composition of many of these products is uncertain, there may
be contaminants and pharmaceutical additives, and their interaction with
prescription medications is unpredictable," says Professor Byard.
"However, the potential role and impact of herbal medicines, and
possible adulterants within them, is usually not considered in
medicolegal cases.
"Forensic facilities may be missing the presence of harmful or toxic
substances when carrying out post mortem assessments not because the
substances aren't there but because pathologists may not be looking for
them.
"When considering cases in which a person has died after taking
herbal medicines sourced from overseas, forensic pathologists need to
take extra care to consider the possibility that adulterants have played
a role in the person's demise," says Professor Byard.
The Wall