The history of cannabis as medicine is not a counterculture argument. It is not an advocacy position. It is the documented record of human civilisation's relationship with a plant across five millennia, preserved in manuscripts, papyri, pharmacopoeias, and botanical texts that predate every institution that has subsequently criminalised it. The argument that cannabis has no medical value — the argument enshrined in the United Nations Single Convention on Narcotic Drugs of 1961, which placed cannabis in Schedule IV alongside heroin as a substance of no therapeutic use — is not the conclusion of the scientific record. It is a contradiction of it. The scientific record, examined from its oldest surviving sources, points in one direction only. The Meridian begins this edition there: at the beginning, five thousand years before the first law, when the only authority on the plant was the physician, the priest, and the farmer who grew it.

Emperor Shen Nung pharmacopoeia 2700 BCE cannabis medicine China ancient history therapeutic use

The oldest verified written reference to cannabis as medicine appears in the Chinese pharmacopoeia attributed to the Emperor Shen Nung, dated to approximately 2700 BCE. Shen Nung — the Divine Farmer — is one of the three mythical sovereigns of ancient Chinese tradition and is credited with identifying hundreds of medicinal plants and their properties. His pharmacopoeia, the Pen Ts'ao Ching or Classic of Herbal Medicine, documents cannabis — referred to as ma — as a therapeutic agent for rheumatism, malaria, constipation, and absent-mindedness. The text notes the plant's psychoactive properties and recommends controlled use for therapeutic purposes.

Cannabis cultivation in China predates even this written record. Archaeological evidence indicates cannabis was cultivated in what is now Taiwan as early as 10,000 BCE — not for psychoactive use, but for its fibre, which was used to make rope, clothing, and paper. By the time Shen Nung's pharmacopoeia was written, cannabis had been in the daily material life of Chinese civilisation for millennia. The physician who prescribed it was not prescribing a new or unfamiliar substance. He was formalising what his patients already knew from generations of practical experience with the plant. The medical record begins not with a discovery but with a documentation of what was already common knowledge.

Ebers Papyrus 1550 BCE cannabis Egypt ancient medicine inflammation therapeutic use documented

The Ebers Papyrus, dated to approximately 1550 BCE and now held in the library of the University of Leipzig, is one of the oldest surviving medical documents in the world. It contains approximately 700 remedies and medical prescriptions compiled from earlier sources, representing the accumulated medical knowledge of Egyptian civilisation across at least several preceding centuries. Cannabis — referred to in the papyrus as shemshemet — appears in several prescriptions, including one for inflammation administered vaginally and another applied topically. The Hearst Papyrus, a contemporaneous document, also references cannabis in a prescription for the eyes.

The significance of the Ebers Papyrus is not simply that it mentions cannabis. It is that it mentions cannabis in the same document that details surgical procedures, describes internal medicine for specific conditions, and prescribes treatments across a range of documented ailments. Cannabis was not a fringe or exotic substance in the Egyptian medical tradition. It sat alongside treatments for intestinal conditions, skin diseases, and gynaecological complaints in the mainstream medical literature of one of the most sophisticated civilisations of the ancient world. The physicians who used it were not outlaws or herbalists on the margins of their society. They were the medical establishment of their era.

Atharva Veda cannabis bhang five sacred plants India 1500 BCE Shiva Vedic tradition Dr Uma Dhanabalan

In India, the cannabis plant occupies a position in the oldest surviving body of religious and botanical knowledge that no legal framework has ever been able to extinguish. Dr Uma Dhanabalan, Harvard-trained physician and Cannabinoid Medicine Specialist, stated in an interview with the Economic Times: "Cannabis is one of five essential plants in the Vedas." The statement is not metaphorical. It is historically documented.

The Atharva Veda, composed approximately between 1500 and 1200 BCE and forming part of the oldest surviving corpus of Sanskrit literature, names cannabis — referred to as bhang — among the five sacred plants given to humanity for protection and healing. The specific verse, from Book 11, Chapter 6, Verse 15, reads in standard translation: "To the five kingdoms of the plants which Soma rules as Lord we speak. Darbha, cannabis, barley, mighty power: may these deliver us from woe." The five sacred plants are named alongside Soma — the divine drink of the Vedic tradition — not as intoxicants but as medicines and protectors. Cannabis in the Vedic tradition is not a recreational substance. It is a therapeutic, spiritual, and agricultural resource of the highest religious significance.

The God Shiva in the Hindu tradition is depicted as a consumer of bhang. The drink of bhang — cannabis mixed with milk, spices, and sometimes nuts — is consumed at festivals of Holi and Mahashivaratri across the Indian subcontinent, practices documented across more than three thousand years of continuous cultural transmission. The Indian Hemp Drugs Commission of 1894 — the most comprehensive study of cannabis ever conducted by a colonial government — documented these practices in detail and concluded that the moderate use of cannabis was not harmful and that prohibition would be unjust. The British colonial government that commissioned the report suppressed its conclusions. But the practices it documented continued, as they had for three thousand years before the Commission was convened, and as they continue today across a billion-person civilisation that did not require a colonial administrator's permission to understand the plant its ancestors had been using since the Vedas were written.

Herodotus Scythian cannabis ritual 5th century BCE Persia ancient history documented therapeutic use

The Greek historian Herodotus, writing in the fifth century BCE, provides the earliest Western documentary account of cannabis use by a named people. In his Histories, Book IV, Herodotus describes the Scythians — the nomadic Iranian people who occupied the Pontic steppe from the 7th to the 3rd century BCE — conducting a purification ritual following a funeral in which cannabis was placed on heated stones inside a small enclosed structure and inhaled. He writes that the Scythians "howl with pleasure" at the sensation and that the practice served as their equivalent of a bath. Archaeological excavations of Scythian burial mounds have confirmed Herodotus's account: cannabis seeds and charred plant material have been recovered from bronze censers in Scythian grave sites, including a remarkable find at Pazyryk in the Altai Mountains that dates to approximately 400 BCE.

The Zoroastrian tradition of ancient Persia — the religious and philosophical system that would influence Judaism, Christianity, and Islam — includes references to haoma, a sacred ritual drink whose precise botanical identity has been debated by scholars but which several historians of religion have argued may have included cannabis. The Zend-Avesta, the primary Zoroastrian scripture, describes haoma as the first of medicinal plants. Whether or not haoma was specifically cannabis, the broader Iranian tradition of the ancient world treated the plant as a medicinal and spiritual resource of significance, documented across multiple archaeological and textual sources.

Dioscorides De Materia Medica cannabis 1st century CE ancient Greece Rome medicine therapeutic documented

Pedanius Dioscorides, a Greek physician who served in the Roman army during the reign of the Emperor Nero in the first century CE, produced the most influential pharmacological text of the ancient and medieval worlds: De Materia Medica, a five-volume work documenting the therapeutic properties of approximately 600 plants, 90 minerals, and 35 animal products. The work was translated into Arabic, Persian, and Latin and served as the standard medical reference text across Europe, the Islamic world, and North Africa for more than fifteen centuries — until the scientific revolution of the 17th century began to replace it with experimental pharmacology.

Dioscorides documents cannabis in De Materia Medica under the entry for Cannabis sativa. He notes that the plant produces seeds that, when consumed in quantity, diminish sexual potency. He documents the juice of the plant as useful for earache and pain. He notes the fibre's industrial use. The entry is matter-of-fact, clinical, and consistent with the rest of his pharmacological method: observe the plant, document its properties, note its applications and its contraindications. Cannabis, in Dioscorides's account, is one botanical specimen among hundreds — useful, documented, and unremarkable in the sense that its place in the medical tradition required no special justification. It had been there long before he recorded it.

The Roman writer Pliny the Elder, in his Natural History completed in approximately 77 CE, also documents cannabis, noting both its fibre uses and its medicinal applications. The Arab physician Ibn Sina — known in the West as Avicenna — includes cannabis in his Canon of Medicine of 1025 CE, which synthesised the Greek medical tradition with Islamic scholarship and served as the primary medical text of European universities from the 12th to the 17th century. The therapeutic use of cannabis is not an ancient curiosity that disappears from the medical record before modernity. It runs continuously through the medical literature of every major civilisation from 2700 BCE to the 20th century.

cannabis zero deaths historical record overdose alcohol tobacco aspirin comparison five thousand years therapeutic use

Five thousand years. Every major ancient civilisation. Continuous documented therapeutic use. And in the entire historical record — from the first written reference in Shen Nung's pharmacopoeia to the last clinical study published before this edition went to press — there is not a single documented human death attributable to cannabis overdose. Not one. The record is not silent on this point because the evidence is unavailable. The record is silent because the event has not occurred.

The contrast with other substances in common therapeutic and social use is not marginal. It is absolute. Alcohol, used therapeutically and socially across a comparable historical period, kills approximately three million people per year globally according to the World Health Organisation's most recent data. Tobacco, introduced into widespread use in Europe in the 16th century — a fraction of cannabis's documented history — kills approximately eight million people per year. Aspirin, introduced in 1899 as a pharmaceutical product and available without prescription in every pharmacy on earth, kills approximately 7,600 people per year in the United States alone from gastrointestinal bleeding and related complications. Paracetamol — acetaminophen — is the leading single cause of acute liver failure in both the United States and the United Kingdom. Cannabis: zero. Across five thousand years. The record has never been broken.

The significance of this record for the legal question of cannabis prohibition is direct and unavoidable. The United Nations Single Convention on Narcotic Drugs of 1961 placed cannabis in Schedule IV — the most restrictive category in the convention — on the basis that it represented a substance of high abuse potential and no legitimate medical use. Schedule IV was specifically designed for substances so dangerous that no medical justification could outweigh the risk of their availability. The historical record of cannabis — five thousand years of documented therapeutic use and zero deaths from overdose — does not describe a Schedule IV substance. It describes the opposite.

1925 Geneva Convention cannabis criminalisation Mohammed El Guindy International Opium Convention five thousand years medicine crime

In February 1925, delegates gathered in Geneva for the Second International Opium Convention. The convention had been convened to address the international trade in opium and its derivatives — morphine, heroin, and cocaine. Cannabis was not on the original agenda. It was introduced by Mohammed El Guindy, Egypt's delegate, who argued that cannabis was as dangerous as opium and should be subjected to the same international controls. The convention agreed. Cannabis was added to the convention's list of controlled substances. The plant that ancient Egypt had prescribed in the Ebers Papyrus thirty-four centuries earlier was, in the same geographical region of the world, classified as a dangerous narcotic by international agreement.

The argument El Guindy made in Geneva was not supported by the medical literature that had accumulated over five thousand years. It was not supported by the Indian Hemp Drugs Commission's comprehensive study of thirty years earlier, which had concluded that moderate cannabis use caused no significant harm. It was supported by political pressure, by commercial interests that the League of Nations archives document but that no delegate named explicitly, and by the institutional momentum of a conference that had already agreed to restrict one class of substances and found it administratively convenient to add another. The science was not consulted. The history was not reviewed. Five thousand years of documented therapeutic use with zero deaths from overdose was not placed before the Geneva delegates as evidence. The decision took an afternoon.

The articles that follow in this edition document what happened between 1925 and 2026: the propaganda, the racism, the suppressed science, the institutional corruption, the human cost, and the global movement that is slowly, unevenly, and against significant institutional resistance, restoring the plant to its pre-1925 legal status in jurisdiction after jurisdiction around the world. But before those arguments can be understood in their full weight, the foundation must be established. The foundation is this: cannabis was medicine for five thousand years before the law said it was not. The law was wrong. The record has always said so.

This is the first article in Chapter One of The Colonised Plant: The Cannabis Edition, June 2026. The complete edition is published at themeridian.info/june-2026. The next article in this chapter examines the five sacred plants of the Vedas and the knowledge the colonial system erased.