Thursday, January 17, 2008

Traditional Medicine


Traditional
medicine

What
is traditional medicine?

Traditional
medicine refers to health practices, approaches, knowledge and beliefs incorporating
plant, animal and mineral based medicines, spiritual therapies, manual techniques
and exercises, applied singularly or in combination to treat, diagnose and prevent
illnesses or maintain well-being.

Countries
in Africa, Asia and Latin America use traditional medicine (TM) to help meet some
of their primary health care needs. In Africa, up to 80% of the population uses
traditional medicine for primary health care. In industralized countries, adaptations
of traditional medicine are termed “Complementary“ or “Alternative” (CAM).

Increasing
use and popularity

TM
has maintained its popularity in all regions of the developing world and its use
is rapidly spreading in industrialized countries.

  • In
    China, traditional herbal preparations account for 30%-50% of the total medicinal
    consumption.
  • In Ghana, Mali,
    Nigeria and Zambia, the first line of treatment for 60% of children with high
    fever resulting from malaria is the use of herbal medicines at home.
  • WHO
    estimates that in several African countries traditional birth attendants assist
    in the majority of births.
  • In
    Europe, North America and other industrialized regions, over 50% of the population
    have used complementary or alternative medicine at least once.
  • In
    San Francisco, London and South Africa, 75% of people living with HIV/AIDS use
    TM/CAM.
  • 70% of the population
    in Canada have used complementary medicine at least once.
  • In
    Germany, 90% of the population have used a natural remedy at some point in their
    life. Between 1995 and 2000, the number of doctors who had undergone special training
    in natural remedy medicine had almost doubled to 10 800.
  • In
    the United States, 158 million of the adult population use complementary medicines
    and according to the USA Commission for Alternative and Complementary medicines,
    US $17 billion was spent on traditional remedies in 2000.
  • In
    the United Kingdom, annual expenditure on alternative medicine is US$ 230 million.
  • The global market for herbal
    medicines currently stands at over US $ 60 billion annually and is growing steadily.

Safety
and efficacy issues

Scientific
evidence from randomized clinical trials is only strong for many uses of acupuncture,
some herbal medicines and for some of the manual therapies. Further research is
needed to ascertain the efficacy and safety of several other practices and medicinal
plants.

Unregulated or
inappropriate use of traditional medicines and practices can have negative or
dangerous effects.

For
instance, the herb “Ma Huang” (Ephedra) is traditionally used in China to treat
respiratory congestion. In the United States, the herb was marketed as a dietary
aid, whose over dosage led to at least a dozen deaths, heart attacks and strokes.

In
Belgium, at least 70 people required renal transplant or dialysis for interstitial
fibrosis of the kidney after taking a herbal preparation made from the wrong species
of plant as slimming treatment.

Biodiversity
and sustainability

In
addition to patient safety issues, there is the risk that a growing herbal market
and its great commercial benefit might pose a threat to biodiversity through the
over harvesting of the raw material for herbal medicines and other natural health
care products. These practices, if not controlled, may lead to the extinction
of endangered species and the destruction of natural habitats and resources.

Another
related issue is that at present, the requirements for protection provided under
international standards for patent law and by most national conventional patent
laws are inadequate to protect traditional knowledge and biodiversity.

Tried
and tested methods and products

  • 25%
    of modern medicines are made from plants first used traditionally.
  • Acupuncture
    has been proven effective in relieving postoperative pain, nausea during pregnancy,
    nausea and vomiting resulting from chemotherapy, and dental pain with extremely
    low side effects. It can also alleviate anxiety, panic disorders and insomnia.
  • Yoga can reduce asthma attacks
    while Tai Ji techniques can help the elderly reduce their fear of falls.
  • TM
    can also have impact on infectious diseases. For example, the Chinese herbal remedy
    Artemisia annua, used in China for almost 2000 years has been found to be effective
    against resistant malaria and could create a breakthrough in preventing almost
    one million deaths annually, most of them children, from severe malaria.
  • In
    South Africa, the Medical Research Council is conducting studies on the efficacy
    of the plant Sutherlandia Microphylla in treating AIDS patients. Traditionally
    used as a tonic, this plant may increase energy, appetite and body mass in people
    living with HIV.

WHO
efforts in promoting safe, effective and affordable traditional medicine

The
World Health Organization launched its first ever comprehensive traditional medicine
strategy in 2002. The strategy is designed to assist countries to:


  • Develop national policies on the
    evaluation and regulation of TM/CAM practices;
  • Create
    a stronger evidence base on the safety, efficacy and quality of the TAM/CAM products
    and practices;
  • Ensure availability
    and affordability of TM/CAM including essential herbal medicines;
  • Promote
    therapeutically sound use of TM/CAM by providers and consumers;
  • Document
    traditional medicines and remedies.

At
present, WHO is supporting clinical studies on antimalarials in three African
countries; the studies are revealing good potential for herbal antimalarials.

Other
collaboration is taking place with Burkina Faso, the Democratic Republic of the
Congo, Ghana, Mali, Nigeria, Kenya, Uganda, and Zimbabwe in the research and evaluation
of herbal treatments for HIV/ AIDS, malaria, sickle cell anaemia and Diabetes
Mellitus.

In Tanzania,
WHO, in collaboration with China, is providing technical support to the government
for the production of antimalarials derived from the Chinese herb Artemisia annua.
Local production of the medicine will bring the price of one dose down from US
$6 or $7 to a more affordable $2.

In
2003, WHO support has so far facilitated the development and introduction of traditional
and alternative health care curricula in seven tertiary education institutions
in the Philippines.

Training
workshops on the use of traditional medicines for selected diseases and disorders
have also been organized in China, Mongolia and Vietnam.

Priorities
for promoting the use of traditional medicines

Over
one-third of the population in developing countries lack access to essential medicines.
The provision of safe and effective TM/CAM therapies could become a critical tool
to increase access to health care.

While
China, the Democratic People’s Republic of Korea, the Republic of Korea and Vietnam
have fully integrated traditional medicine into their health care systems, many
countries are yet to collect and integrate standardized evidence on this type
of health care.

70 countries
have a national regulation on herbal medicines but the legislative control of
medicinal plants has not evolved around a structured model. This is because medicinal
products or herbs are defined differently in different countries and diverse approaches
have been adopted with regard to licensing, dispensing, manufacturing and trading.

The
limited scientific evidence about TM/CAM’s safety and efficacy as well as other
considerations make it important for governments to:

  • Formulate
    national policy and regulation for the proper use of TM/CAM and its integration
    into national health care systems in line with the provisions of the WHO strategies
    on Traditional Medicines;
  • Establish
    regulatory mechanisms to control the safety and quality of products and of TM/CAM
    practice;
  • Create awareness
    about safe and effective TM/CAM therapies among the public and consumers;
  • Cultivate
    and conserve medicinal plants to ensure their sustainable use.

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