Homeopathy is a system of medicine based on the similia (‘treating like with like’) principle. It usually entails taking highly diluted remedies by mouth.
Scientific name
Homeopathy (or homoeopathy)
Ingredients
Homeopathic remedies are frequently made from natural substances, e.g. plants or minerals, but in principle they can originate from any material (e.g. Berlin Wall remedy) or even non-material sources (e.g. X-ray remedy).
Application and dosage
Homeopathy is defined as “a therapeutic method using preparations of substances whose effects when administered to healthy subjects correspond to the manifestation of the disorder in the individual patient”.1 In other words it is based on the similia principle which states that “substances may be used to treat disorders whose manifestations are similar to those which they will themselves induce in a healthy subject (Similia similibus curentur = ‘let like be cured by like’).1
Homeopathic preparations are produced through a process of serial dilution and succussion/shaking (potentisation) of the “mother tincture”. Preparations are available in a range of dilutions, from low dilutions where the original substance is measurable, to extremely high dilutions in which it is unlikely that a single molecule of the original substance remains. Homeopathic potencies are designated by a number and a letter. The number refers to the number of successive serial dilutions to which the starting material has been subjected. The letter refers to the scale used, the decimal (D or X) and centesimal scales (C) being those most widely used. In the decimal method a 1 in 10 dilution is used at each stage while in the centesimal method a 1 in 100 dilution is used in successive stages.1
They are usually prescribed on a highly individualized basis; ideally, the totality of the patient’s complaints should match the “drug picture” of the remedy which has been defined in so-called “provings”, i.e. homeopathic pathogenetic trials. These are studies which test a substance at a non-toxic level on healthy volunteers to determine the symptoms it provokes and which, according to the similarity principle, it may be used to treat.2
Today, there are several variations of homeopathy as described above e.g. isopathy (homeopathically diluted remedies derived from the causative agent of the disease itself), or homotoxicology (illness is understood as the body’s inability to effectively cope with its burden of toxins), or complex homeopathy (combination of two or more homeopathic medicines in a standard mixture), or clinical homeopathy (one or more single remedies for standard clinical situations).1
History/Providers
Homeopathy was developed by the German doctor Samuel Hahnemann (1755-1843) and became popular, first in Europe, then also in a wide variety of countries around the world, especially in the US, India and South America. When more and more effective pharmacological treatments were discovered, the popularity decreased. Recently, it has experienced somewhat of a renaissance in parallel with the growing interest in CAM.
Today homeopathy is practised both by doctors, other health professionals and by lay homeopaths (or “professional homeopaths”). The former two groups are statutorily regulated by their professional bodies, while the latter are often not regulated. In the UK, for example, anyone regardless of background can currently practise as a homeopath. Homeopathic preparations can be prescribed by a homeopath during a consultation but can also be purchased from health food shops, some pharmacies or online suppliers.
Claims of efficacy
Homeopaths believe that homeopathic remedies stimulate the body’s own healing powers (vis medicatrix naturae), i.e. the inherent ability of an organism to overcome disease and disorder and regain its health.1 Therefore, Hahnemann viewed homeopathy as a “cure all”.2 Today it is mostly advocated as a treatment or prevention of chronic conditions and often administered as an adjunctive treatment.3
Mechanism of action
No biologically plausible mechanism of action is known. A 2007 systematic review of in-vitro research on high potency effects found that “no positive result was stable enough to be reproduced by all investigators”; however “even experiments with high methodological standard could demonstrate an effect of high potencies”.4 The fact that homeopathic preparations “may exhibit specific physiochemical properties”5 does not mean that a mechanism of action has been identified.
Alleged indications
In oncology, homeopathy is mostly used as palliative and supportive care to improve quality of life, to ease or prevent the adverse effects of treatments, or to alleviate or prevent the symptoms of the cancer.
Prevalence of use
This depends crucially on the country and the setting. For instance, homeopathy is popular in France 6, Italy 7 and Germany 8. Some European centres are specialized and use homeopathy for the majority of cancer patients. Elsewhere, it would not be used at all or only very rarely.
Legal issues
Non-doctor homeopaths are in many countries not regulated by statute. In some countries, they are not officially allowed to practise but usually this is not enforced. In some countries, e.g. the UK, it is illegal for homeopaths to claim they can cure cancer.
Costs and expenditure
Homeopathic remedies tend to be relatively cheap. A consultation with a homeopath can last up to 1 hour and therefore is more costly.
Homeopathy is a system of medicine based on the similia (‘treating like with like’) principle. It usually entails taking highly diluted remedies by mouth.
