Christian Friedrich Samuel Hahnemann ( , ; 10 April 1755 – 2 July 1843) was a German
physician
A physician, medical practitioner (British English), medical doctor, or simply doctor is a health professional who practices medicine, which is concerned with promoting, maintaining or restoring health through the Medical education, study, Med ...
, best known for creating the
pseudoscientific
Pseudoscience consists of statements, beliefs, or practices that claim to be both scientific and factual but are incompatible with the scientific method. Pseudoscience is often characterized by contradictory, exaggerated or unfalsifiable cl ...
system of
alternative medicine
Alternative medicine refers to practices that aim to achieve the healing effects of conventional medicine, but that typically lack biological plausibility, testability, repeatability, or supporting evidence of effectiveness. Such practices are ...
called
homeopathy
Homeopathy or homoeopathy is a pseudoscientific system of alternative medicine. It was conceived in 1796 by the German physician Samuel Hahnemann. Its practitioners, called homeopaths or homeopathic physicians, believe that a substance that ...
.
Early life
Christian Friedrich Samuel Hahnemann was born in
Meissen
Meissen ( ), is a town of approximately 30,000 about northwest of Dresden and 75 km (46 mi) west of Bautzen on both banks of the Elbe river in the Free State of Saxony, in eastern Germany. Meissen is the home of Meissen porcelain, th ...
,
Saxony
Saxony, officially the Free State of Saxony, is a landlocked state of Germany, bordering the states of Brandenburg, Saxony-Anhalt, Thuringia, and Bavaria, as well as the countries of Poland and the Czech Republic. Its capital is Dresden, and ...
, near
Dresden
Dresden (; ; Upper Saxon German, Upper Saxon: ''Dräsdn''; , ) is the capital city of the States of Germany, German state of Saxony and its second most populous city after Leipzig. It is the List of cities in Germany by population, 12th most p ...
. His father, Christian Gottfried Hahnemann, was a painter and designer of porcelain, for which the town of Meissen is famous.
As a young man, Hahnemann became proficient in a number of languages, including English, French, Italian, Greek and Latin. He eventually made a living as a translator and teacher of languages, gaining further proficiency in "
Arabic
Arabic (, , or , ) is a Central Semitic languages, Central Semitic language of the Afroasiatic languages, Afroasiatic language family spoken primarily in the Arab world. The International Organization for Standardization (ISO) assigns lang ...
,
Syriac,
Chaldaic and
Hebrew
Hebrew (; ''ʿÎbrit'') is a Northwest Semitic languages, Northwest Semitic language within the Afroasiatic languages, Afroasiatic language family. A regional dialect of the Canaanite languages, it was natively spoken by the Israelites and ...
".
[
]
Hahnemann studied medicine for two years at
Leipzig
Leipzig (, ; ; Upper Saxon: ; ) is the most populous city in the States of Germany, German state of Saxony. The city has a population of 628,718 inhabitants as of 2023. It is the List of cities in Germany by population, eighth-largest city in Ge ...
. Citing Leipzig's lack of clinical facilities, he moved to
Vienna
Vienna ( ; ; ) is the capital city, capital, List of largest cities in Austria, most populous city, and one of Federal states of Austria, nine federal states of Austria. It is Austria's primate city, with just over two million inhabitants. ...
, where he studied for ten months. His medical professors in Leipzig and Vienna included the physician
Joseph von Quarin
Joseph von Quarin (November 19, 1733 – March 19, 1814) was an Austrian physician born in Vienna.
At the age of 15, he obtained his PhD in Vienna, followed by studies of medicine at the University of Freiburg. In 1751 he received his medical doc ...
, later credited for turning
Vienna General Hospital
The Vienna General Hospital (), usually abbreviated to AKH, is the general hospital in Vienna, Austria. It is also the city's university hospital, and the site of the Medical University of Vienna. It is Europe's fifth largest hospital, b ...
into a model European medical institution.
After one term of further study, Hahnemann graduated with a medical degree with honors from the
University of Erlangen
A university () is an institution of tertiary education and research which awards academic degrees in several academic disciplines. ''University'' is derived from the Latin phrase , which roughly means "community of teachers and scholars". Univ ...
on 10 August 1779. His poverty may have forced him to choose Erlangen, as the school's fees were lower than in Vienna. Hahnemann's thesis was titled ''Conspectus adfectuum spasmodicorum aetiologicus et therapeuticus''
'A Dissertation on the Causes and Treatment of Spasmodic Diseases''
Medical practice
In 1781, Hahnemann took a village doctor's position in the copper-mining area of
Mansfeld
Mansfeld (), sometimes also unofficially Mansfeld-Lutherstadt, is a town in the district of Mansfeld-Südharz, in Saxony-Anhalt, Germany.
Protestant reformator Martin Luther grew up in Mansfeld, and in 1993 the town became one of sixteen places ...
,
Saxony
Saxony, officially the Free State of Saxony, is a landlocked state of Germany, bordering the states of Brandenburg, Saxony-Anhalt, Thuringia, and Bavaria, as well as the countries of Poland and the Czech Republic. Its capital is Dresden, and ...
. He soon married Johanna Henriette Kuchler and would eventually have eleven children.
After abandoning medical practice and while working as a translator of scientific and medical textbooks, he translated fifteen books from English, six from French, and one each from Latin and Italian from 1777 to 1806. Hahnemann travelled around Saxony for many years, staying in many different towns and villages for varying lengths of time, never living far from the
River Elbe
The Elbe ( ; ; or ''Elv''; Upper Sorbian, Upper and , ) is one of the major rivers of Central Europe. It rises in the Giant Mountains of the northern Czech Republic before traversing much of Bohemia (western half of the Czech Republic), then Ge ...
and settling at different times in
Dresden
Dresden (; ; Upper Saxon German, Upper Saxon: ''Dräsdn''; , ) is the capital city of the States of Germany, German state of Saxony and its second most populous city after Leipzig. It is the List of cities in Germany by population, 12th most p ...
,
Torgau
Torgau () is a town on the banks of the Elbe in northwestern Saxony, Germany. It is the capital of the district Nordsachsen.
Outside Germany, the town is best known as where on 25 April 1945, the United States and Soviet Armies first met near ...
,
Leipzig
Leipzig (, ; ; Upper Saxon: ; ) is the most populous city in the States of Germany, German state of Saxony. The city has a population of 628,718 inhabitants as of 2023. It is the List of cities in Germany by population, eighth-largest city in Ge ...
and
Köthen (Anhalt)
Köthen () is a town in Germany. It is the capital of the district of Anhalt-Bitterfeld in Saxony-Anhalt, about north of Halle.
Köthen is the location of the main campus and the administrative centre of the regional university, Anhalt Unive ...
before finally moving to Paris in June 1835.
Creation of homeopathy
Hahnemann was dissatisfied with the state of medicine in his time and particularly objected to practices such as
bloodletting
Bloodletting (or blood-letting) was the deliberate withdrawal of blood from a patient to prevent or cure illness and disease. Bloodletting, whether by a physician or by leeches, was based on an ancient system of medicine in which blood and othe ...
. He claimed that the medicine he had been taught to practice sometimes did the patient more harm than good:
My sense of duty would not easily allow me to treat the unknown pathological state of my suffering brethren with these unknown medicines. The thought of becoming in this way a murderer or malefactor towards the life of my fellow human beings was most terrible to me, so terrible and disturbing that I wholly gave up my practice in the first years of my married life and occupied myself solely with chemistry
Chemistry is the scientific study of the properties and behavior of matter. It is a physical science within the natural sciences that studies the chemical elements that make up matter and chemical compound, compounds made of atoms, molecules a ...
and writing.
After giving up his practice around 1784, Hahnemann made his living chiefly as a writer and translator while resolving also to investigate the causes of medicine's alleged errors. While translating
William Cullen
William Cullen (; 15 April 17105 February 1790) was a British physician, chemist and agriculturalist from Hamilton, Scotland, who also served as a professor at the Edinburgh Medical School. Cullen was a central figure in the Scottish Enli ...
's ''A Treatise on the Materia Medica'', Hahnemann encountered the claim that
cinchona
''Cinchona'' (pronounced or ) is a genus of flowering plants in the family Rubiaceae containing at least 23 species of trees and shrubs. All are native to the Tropical Andes, tropical Andean forests of western South America. A few species are ...
, the bark of a Peruvian tree, was effective in treating
malaria
Malaria is a Mosquito-borne disease, mosquito-borne infectious disease that affects vertebrates and ''Anopheles'' mosquitoes. Human malaria causes Signs and symptoms, symptoms that typically include fever, Fatigue (medical), fatigue, vomitin ...
because of its astringency. Hahnemann believed other astringent substances were ineffective against malaria and began to research cinchona's effect on the human body by self-application. Noting that the drug-induced malaria-like symptoms in himself, he concluded that it would do so in any healthy individual. This led him to postulate a healing principle: "That which can produce a set of symptoms in a healthy individual, can treat a sick individual who is manifesting a similar set of symptoms."
This principle, ''like cures like'', became the basis for an approach to medicine to which he gave the name
homeopathy
Homeopathy or homoeopathy is a pseudoscientific system of alternative medicine. It was conceived in 1796 by the German physician Samuel Hahnemann. Its practitioners, called homeopaths or homeopathic physicians, believe that a substance that ...
. He first used the term homeopathy in his essay ''Indications of the Homeopathic Employment of Medicines in Ordinary Practice'', published in
Hufeland's ''Journal'' in 1807.
Development of homeopathy
Following up the work of the Viennese physician
Anton von Störck, Hahnemann tested substances for the effects they produced on a healthy individual, presupposing (as von Störck had claimed) that they may heal the same ills that they caused. His research led him to agree with von Störck that the toxic effects of ingested substances are often broadly parallel to certain disease states, and his exploration of historical cases of poisoning in the medical literature further implied a more generalised medicinal "law of similars". He later devised methods of diluting the drugs he was testing in order to mitigate their toxic effects. He claimed that these dilutions when prepared according to his technique of "potentization" using dilution and succussion (vigorous shaking), were still effective in alleviating the same symptoms in the sick. His more systematic experiments with dose reduction really commenced around 1800–01 when, on the basis of his "law of similars," he had begun using ''
Ipecacuanha'' for the treatment of coughs and
Belladonna for scarlet fever.
He first published an article about the homeopathic approach in a
German-language
German (, ) is a West Germanic language in the Indo-European language family, mainly spoken in Western and Central Europe. It is the majority and official (or co-official) language in Germany, Austria, Switzerland, and Liechtenstein. It is a ...
medical journal in 1796. Following a series of further essays, he published in 1810 "Organon of the Rational Art of Healing", followed over the years by four further editions entitled ''
The Organon of the Healing Art'', the first systematic treatise and containing all his detailed instructions on the subject. A 6th ''Organon'' edition, unpublished during his lifetime and dating from February 1842, was only published many years after his death. It consisted of a 5th ''Organon'' containing extensive handwritten annotations. The ''Organon'' is widely regarded as a remodelled form of an essay he published in 1806 called "The Medicine of Experience", which had been published in Hufeland's Journal. Of the ''Organon'',
Robert Ellis Dudgeon states it "was an amplification and extension of his "Medicine of Experience", worked up with greater care, and put into a more methodical and
aphoristic form, after the model of the Hippocratic writings."
Coffee theory of disease
Around the start of the nineteenth century, Hahnemann developed a theory, propounded in his 1803 essay ''On the Effects of Coffee from Original Observations'', that many diseases are caused by
coffee
Coffee is a beverage brewed from roasted, ground coffee beans. Darkly colored, bitter, and slightly acidic, coffee has a stimulating effect on humans, primarily due to its caffeine content, but decaffeinated coffee is also commercially a ...
. Hahnemann later abandoned the coffee theory in favour of the theory that disease is caused by ''
Psora'', but it has been noted that the list of conditions Hahnemann attributed to coffee was similar to his list of conditions caused by ''Psora''.
Later life

In early 1811 Hahnemann moved his family back to
Leipzig
Leipzig (, ; ; Upper Saxon: ; ) is the most populous city in the States of Germany, German state of Saxony. The city has a population of 628,718 inhabitants as of 2023. It is the List of cities in Germany by population, eighth-largest city in Ge ...
with the intention of teaching his new medical system at the
University of Leipzig
Leipzig University (), in Leipzig in Saxony, Germany, is one of the world's oldest universities and the second-oldest university (by consecutive years of existence) in Germany. The university was founded on 2 December 1409 by Frederick I, Electo ...
. As required by the university statutes, to become a faculty member he was required to submit and defend a thesis on a medical topic of his choice. On 26 June 1812, Hahnemann presented a
Latin
Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...
thesis, entitled ''"A Medical Historical Dissertation on the Helleborism of the Ancients."'' His thesis very thoroughly examined the historical literature and sought to differentiate between the ancient use of ''
Helleborus niger
''Helleborus niger'', commonly called Christmas rose or black hellebore, is an evergreen perennial flowering plant in the buttercup family, Ranunculaceae. It is one of about 20 species from the genus Hellebore.
It is a poisonous cottage garden fa ...
'', or black hellebore, and the medicinal uses of the "white hellebore", botanically ''
Veratrum album'', both of which are poisonous plants.
Hahnemann continued practicing and researching homeopathy, as well as writing and lecturing for the rest of his life. He died in 1843 in Paris, at 88 years of age, and is entombed in a mausoleum at Paris's
Père Lachaise Cemetery
Père Lachaise Cemetery (, , formerly , ) is the largest cemetery in Paris, France, at . With more than 3.5 million visitors annually, it is the most visited necropolis in the world.
Buried at Père Lachaise are many famous figures in the ...
.
Hahnemann's 10 April birthday is celebrated annually by the homeopathic community as World Homeopathy Day.
Descendants
Hahnemann's daughter, Amelie (1789–1881), had a son: Leopold Suss-Hahnemann. Leopold emigrated to England, and he practised homeopathy in London. He retired to the
Isle of Wight
The Isle of Wight (Help:IPA/English, /waɪt/ Help:Pronunciation respelling key, ''WYTE'') is an island off the south coast of England which, together with its surrounding uninhabited islets and Skerry, skerries, is also a ceremonial county. T ...
and died there at the outbreak of World War I in 1914. Dr Leopold Suss-Hahnemann's youngest daughter, Amalia, had two children, Winifred (born in 1898) and Herbert. William Herbert Tankard-Hahnemann (1922–2009) was Winifred's son. He served as a Major in the British Army during World War II, and then had a career in the city of London. He was at one point appointed as a Freeman of the City of London. Mr William Herbert Tankard-Hahnemann, the great-great-great-grandson of Samuel Hahnemann died on 12 January 2009 (his 87th birthday) after 22 years of active patronage of the British Institute of Homeopathy. The William Tankard-Hahnemann line continues with his son, Charles.
Writings
Hahnemann wrote a number of books, essays, and letters on the homeopathic method, chemistry, and general medicine:
* ''Heilkunde der Erfahrung.'' Norderstedt 2010,
* reprinted in
*''
Fragmenta de viribus medicamentorum positivis sive in sano corpore humano obeservitis'', a collection of 27 drug "provings" published in
Latin
Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...
in 1805.
*''
The Organon of the Healing Art'' (1810), a detailed delineation of what he saw as the rationale underpinning homeopathic medicine, and guidelines for practice. Hahnemann published the 5th edition in 1833; a revised draft of this (1842) was discovered after Hahnemann's death and finally published as the 6th edition in 1921.
*''
Materia Medica Pura'', a compilation of "
homoeopathic proving" reports, published in six volumes between vol. I in 1811 and vol. VI in 1821; second edition of vol. I to Vol. VI from 1822 to 1827 and third revised editions of volumes I and II were published in 1830 and 1833, respectively.
*''Chronic Diseases'' (1828), an explanation of the root and cure of
chronic disease
A chronic condition (also known as chronic disease or chronic illness) is a health condition or disease that is persistent or otherwise long-lasting in its effects or a disease that comes with time. The term ''chronic'' is often applied when the ...
according to the theory of
miasms, together with a compilation of "
homoeopathic proving" reports, published in five volumes during the 1830s.
* ''The Friend of Health'', in which Hahnemann "recommended the use of fresh air, bed rest, proper diet, sunshine, public hygiene and numerous other beneficial measures at a time when many other physicians considered them of no value."
* ''Appeal to Thinking Philanthropist Respecting the Mode of Propagation of the Asiatic Choler'', in which Hahnemann describes cholera physicians and nurses as the "certain and frequent propagators" of
cholera
Cholera () is an infection of the small intestine by some Strain (biology), strains of the Bacteria, bacterium ''Vibrio cholerae''. Symptoms may range from none, to mild, to severe. The classic symptom is large amounts of watery diarrhea last ...
and that whilst deriding nurses' "fumigations with chlorine", promoted the use of "drops of camphorated spirit" as a cure for the disease.
* Hahnemann also campaigned for the humane treatment of the
insane in 1792.
*
John Henry Clarke wrote that "In 1787, Hahnemann discovered the best test for arsenic and other poisons in wine, having pointed out the unreliable nature of the '
Wurtemberg test,' which had been in use up to that date."
[Haehl, Vol. 1, p. 34.]
* ''Samuel Hahnemanns Apothekerlexikon''. Vol.2. Crusius, Leipzig 1798–179
Digital editionby the
University and State Library Düsseldorf
The University and State Library Düsseldorf (, abbreviated ULB Düsseldorf) is a central service institution of Heinrich Heine University. Along with Bonn and Münster, it is also one of the three State Libraries of North Rhine-Westphalia.
...
* ''Reine Arzneimittellehre''. Arnold, Dresden (several editions) 1822–182
Digital editionby the
University and State Library Düsseldorf
The University and State Library Düsseldorf (, abbreviated ULB Düsseldorf) is a central service institution of Heinrich Heine University. Along with Bonn and Münster, it is also one of the three State Libraries of North Rhine-Westphalia.
...
* ''Systematische Darstellung der reinen Arzneiwirkungen aller bisher geprüften Mittel''. Vieweg, Braunschweig 1831 �
Digital editionby the
University and State Library Düsseldorf
The University and State Library Düsseldorf (, abbreviated ULB Düsseldorf) is a central service institution of Heinrich Heine University. Along with Bonn and Münster, it is also one of the three State Libraries of North Rhine-Westphalia.
...
See also
*
Hahnemann University Hospital
Hahnemann University Hospital was a Tertiary referral hospital, tertiary care center in Center City, Philadelphia, Center City Philadelphia. It was the teaching hospital of Drexel University College of Medicine. Established in 1885, it was for m ...
*
Samuel Hahnemann Monument
Notes
References
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*, reprinted as
Further reading
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External links
*
Christian Friedrich Samuel HahnemannA historical overview
Hahnemann Building, Hope Street, Liverpoolformer site of the Hahnemann Hospital, Liverpool
*
A digitized copy of Hahnemann's personal 5th edition with handwritten notes for the 6th edition
{{DEFAULTSORT:Hahnemann, Samuel
1755 births
1843 deaths
People from Meissen
People from the Electorate of Saxony
18th-century German physicians
German homeopaths
18th-century writers in Latin
18th-century German male writers
19th-century writers in Latin
University of Erlangen–Nuremberg alumni
Academic staff of Leipzig University
Burials at Père Lachaise Cemetery