Monday, April 27, 2009

Homeopathy

Homeopathy is a form of alternative medicine that treats a disease with heavily diluted preparations created from substances that would ordinarily cause effects similar to the disease's symptoms. As first expounded by German physician, Samuel Hahnemann, in 1796, homeopathic preparations are serially diluted, with shaking ("succussing") after each step, under the belief that this increases the effect of the treatment. This dilution often continues until no molecules of the original substance remain.
Apart from the symptoms of the disease, homeopaths may use aspects of the patient's physical and psychological state to select between remedies.Homeopathic reference books known as repertories are then consulted, and a remedy is selected based on the index of symptoms. Homeopathic remedies are generally considered safe, with rare exceptions.However, homeopaths have been criticized for putting patients at risk with advice to avoid conventional medicine, such as vaccinations,anti-malarial drugs,and antibiotics.In many countries, the laws that govern the regulation and testing of conventional drugs do not apply to homeopathic remedies.
Claims of homeopathy's efficacy (beyond the placebo effect) are unsupported by the collective weight of scientific and clinical evidence.Specific pharmacological effect with no active molecules is scientifically implausible and violates fundamental principles of science, including the law of mass action. Supporters claim that studies published in reputable journals support the efficacy of homeopathy; however, there are only a handful of them, they are not definitive and they have not been replicated.
Several high-quality studies exist showing no evidence for any effect from homeopathy, and studies of homeopathic remedies have generally been shown to have problems that prevent them from being considered unambiguous evidence for homeopathy's efficacy. The lack of convincing scientific evidence supporting homeopathy's efficacy and its use of remedies lacking active ingredients have caused homeopathy to be described as pseudoscience and quackery.

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