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Antonelli, M. Homeopathy and Psychological Therapies. Encyclopedia. Available online: (accessed on 14 April 2024).
Antonelli M. Homeopathy and Psychological Therapies. Encyclopedia. Available at: Accessed April 14, 2024.
Antonelli, Michele. "Homeopathy and Psychological Therapies" Encyclopedia, (accessed April 14, 2024).
Antonelli, M. (2020, December 23). Homeopathy and Psychological Therapies. In Encyclopedia.
Antonelli, Michele. "Homeopathy and Psychological Therapies." Encyclopedia. Web. 23 December, 2020.
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Homeopathy and Psychological Therapies

Homeopathy is a popular, although highly debated, medicinal practice based on the administration of remedies in which active substances are so diluted that no detectable trace of them remains in the final product. This hypothesis paper aims to outline a possible reinterpretation of homeopathy in the light of psychological therapies in order to improve its clinical safety and sustainability. 

homeopathy psychology reinterpretation hypothesis
Homeopathy is a popular, although highly debated, medicinal practice. In Italy, for example, it is estimated that, even if with a slightly declining trend, around 4.1% of the entire population (almost 2.5 million people) occasionally or regularly seeks homeopathic care, and these data, collected in 2013, suggest that homeopathy is the most used Complementary and Alternative Medicine (CAM) by Italians [1]. Epidemiological studies aimed to assess the worldwide prevalence of homeopathy use have reported similar data for other high-income countries [2].
Homeopathy was first invented by the German doctor Samuel Hahnemann (1755–1843), and it is based on the administration of remedies in which active substances are so diluted that no detectable trace of them remains in the final product [3]. In his empirical studies, Hahnemann reported that the self-administration of a common antimalarial medicinal plant (Cinchona) resulted in the occurrence of the same symptoms of malaria, but to a milder degree [4]. This led him to cast the foundations of a new medicinal system called “homeo-pathy”, a noun that originates from the combination of two Greek terms: “homeo-” (from “homoios”, a prefix standing for “same”, “like”) and “-pathy” (from “patheia”, or “suffering”, a suffix usually indicating all diseases) [5]. Hahnemann stated that the proper disease remedy has to be chosen by the homeopathic practitioner on the basis of the principle summarized by a Latin expression: “similia similibus curantur” (literally, like cures like) [3]. In other words, a therapeutic remedy is recommended for a given illness if pharmacological doses of the original substance would theoretically produce the same effects on the body as the disease symptoms. The preparation of a homeopathic remedy implies a serial high dilution of the original substance, along with some mechanical “succussions” or shakes (a process sometimes called “dynamization” or “potentiation”, which is believed to boost the efficacy of the remedy). Every homeopathic product is usually labelled with a Latin name (for example: Aconitum napellus) indicating the original principle which has undergone serial dilutions. Latin is used because of historical traditions and because all physicians worldwide can more easily and unequivocally understand it [6]. Along with their name, homeopathic products often carry a brief description of “how much” they have been diluted: For example, “30 CH” means that the original principle has been diluted by a factor of 100 (usually in a hydroalcoholic solution) for 30 times. More precisely, “CH” stands for “Hahnemann’s Centesimal [dilution]”, thus referring to the method for preparation of homeopathic remedies invented by the German doctor [6]. Common formulations of homeopathic products found in the market usually include sucrose- and/or lactose-containing granules, globules (smaller than granules), and liquid drops for oral consumption; other formulations for local applications like creams, ointments, eye-drops, and nasal sprays are also available (Figure 1) [7].

Figure 1. A homeopathic remedy. Homeopathic remedies are often produced in the form of granules or globules to be taken orally. From:
Originally, homeopathy was proposed for the treatment of any disease, and quickly gained popularity, with one of the first institutions dedicated to it being founded in the USA as early as in the last part of the nineteenth century (the American Institute of Homeopathy) [4]. Since then, various homeopathic clinics and hospitals, even with inpatient services, have been created all around the world: However, in Western countries like the UK, the public financial support of these facilities has mostly been withdrawn in recent years and the acceptability of this alternative medicinal system in public-funded healthcare systems has been questioned openly [4][8]. Similarly, in France, it was decided that the cost of homeopathic remedies is not to be covered by the national fund for health as of 2021 [9]. All the same, there are European countries, such as Luxembourg, where homeopathic remedies are still reimbursed by public health insurances [9]. In Italy, although homeopathic remedies are to be paid for by individual patients in an “out-of-pocket” fashion, there are a few outpatient clinics where the cost of homeopathic consultations is partially or fully subsidized by the public healthcare system, depending on personal income [10]. The case of Switzerland, in which homeopathy, after being withdrawn from the list of reimbursed medicines in 2005, was reintroduced as a basic health insurance-subsidized practice with a general referendum in 2009, shows that, beyond the scientific debate, popular support plays an important role in regulating homeopathic practice [11]. In general, worldwide, specific regulations of homeopathy largely vary on the basis of national laws, as described in a detailed report issued by the World Health Organization in 2001 [12].
The debate around homeopathy has a long history and almost dates back to its origin. After years of speculations, discussion, research, and even fights and controversies, in 2005, a famous editorial published in “The Lancet” concluded that, in consideration of available scientific evidence, the history of homeopathy had eventually come to an end [13], and briefly mentioned the main results of a large study conducted by Aijing Shang et al., where the authors described their findings as “compatible with the notion that the clinical effects of homoeopathy are placebo effects” [14]. However, some supporters of homeopathy raised objections against Shang’s study methods and conclusions [15], and other researchers further prompted the original debate by underscoring that misunderstandings in the definition of homeopathy (as a therapeutic system, as a highly-diluted remedy, as the treatment by a homeopath, or as the inspiring principles of this practice) have resulted in a potentially biased assessment of its therapeutic effects within trial settings [16]. In particular, it was suggested that studying the pharmacological action of homeopathic remedies as if they were drugs does not account for the benefits of the patient–homepath relationship and, therefore, trials aimed to evaluate the overall clinical efficacy of this practice should be designed in such a way as to consider even this less standardizable and harder-to-measure aspect [16]. However, other researchers underscored that homeopathy is to be dismissed, due to its unproven efficacy, dangerous uses as an alternative medicinal system, and basic foundations of obsolete metaphysical concepts [17][18]. In general, the debate has continued over the years, and homeopathy has alternatively been portrayed both as quackery to be banned and as a valid therapeutic practice with a future within standard medicine [19]. Still today, homeopathy remains popular, and the debate around its efficacy and usefulness appears far from being closed [20].
On the one hand, as illustrated by its supporters, some reasons for preserving homeopathy are the following:
  • Homeopathy, especially when “individualized” (namely tailored to the patient’s and disease characteristics), has some effects beyond placebo, and this is also confirmed by the experience of several patients and practitioners [21][22].
  • Homeopathy is not only useful in medicine, but even in other fields of biological science, as it may also have a role for plant health [23].
  • Homeopathic remedies are safe and, in general, highly tolerated by patients [24].
  • There are some accredited universities and colleges where homeopathy is taught [25].
On the other hand, some reasons against homeopathy are the following:
  • The efficacy of homeopathy is scientifically unproven (both in human and in veterinary medicine) and demonstrated only for self-limiting or placebo-responsive health conditions [14][26][27].
  • The basic principles of this practice are not compatible with modern chemistry and physics, and appear to be more philosophical than science-based [18].
  • Homeopathy can be dangerous when embraced as an alternative to standard medicine, especially for severe and life-threatening diseases [28][29][30].
  • There are no recent advances in homeopathy, as its body of knowledge seems not to make any relevant progress over the decades [17].
To date, available high-quality scientific evidence from existing umbrella reviews shows that homeopathy efficacy isn’t clearly superior to placebo, even when considering individualized homeopathy, in which the remedy is chosen not only on the basis of the disease type, but also depending on all subjective symptoms/manifestations reported by the patient [26][31][32]. Extensive literature reviews from the Australian Health and Medical Research Council, from the British National Healthcare System, and from the European Academies’ Scientific Advisory Council point towards the same direction [33][34][35]. This compelling evidence basis is justifiably pushing both the scientific community and policymakers to refuse and dismiss homeopathy as a medicinal practice, thus ultimately hoping for its official ban, with information and educational campaigns pointing towards this objective. However, there is still a part of the population that is fond of homeopathy because of its subjectively perceived beneficial effects (actually, it is not possible to raise objections on individually reported benefits, even if caused by a placebo), and there are also homeopathic physicians and healthcare workers who feel under professional attack when attempts to ban homeopathy are made. These conflicts fuel tensions, separations, and radicalization of opposed beliefs, with no or poor chances to establish a fruitful dialogue [36][37].
An obstacle to an open dialogue is probably the earliest interpretation of homeopathy, which was originally conceived as an alternative medicinal system capable of treating any disease or health-related complaint. This interpretation can be dangerous and has to be rejected: In fact, several cases of patients affected by severe health conditions and experiencing poor clinical outcomes (or even death) after refusing standard care and opting for homeopathy have been reported both by newspapers and in the scientific literature [28][29][30]. In order to create a bridge between homeopathy and standard medicine, it is necessary to reinterpret homeopathy in such a way as to make it become a sustainable and safe practice, in accord with available scientific evidence.


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Subjects: Psychiatry
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Online Date: 23 Dec 2020