The Roots of Medicine: Plant Medicine in Human History

Neanderthal Archaeological Sites
- Contain remnants of medicinal plants.
- Example: Althaea officinalis L.
Otzi the Ice Man
- Found in the Swiss Alps, providing evidence of early medicinal practices.
Beliefs Regarding Illness and Disease
- For most of human history, illness and disease were attributed to the spirit world.

Archaeological Findings in Mexico
- Evidence of peyote cactus utilization.
Ancient Sumer
- City of Ur in southern Iraq is a notable center.
- The Sumerians were among the first to develop a written language (around 2000 B.C.).
- Medicinal practices involved the use of:
- Opium
- Thyme
- Licorice root
- Mustard (Brassica nigra (L.) W. D. J. Koch)
Babylonian Contributions
- Succeeded the Sumerians with advanced medical knowledge (around 2600 B.C.).
- Added to the Sumerian pharmacopoeia with:
- Coriander
- Saffron
- Cinnamon
- Garlic
Ancient Egyptian Medicine
- Built upon knowledge from earlier civilizations; Ebers Papyrus is an early medical text.
- Utilized various plants including:
- Aloe
- Peppermint
- Mandrake
- Henbane
- Castor
- Myrrh (Commiphora myrrha (Nees) Engl.)
Hebrew Medical Practices
- The Old Testament mentions many medicinal plants used by the ancient Hebrews.
African and American Traditions
- Plant remedies prevalent, especially passed orally due to lack of written language in most African cultures.
- The Maya had a written language; however, much was lost during European colonization.

Advancements in Medical Understanding
- The ancient Greeks established organized study and keen observation in medicine.
- Aesculapius: God of healing, son of Apollo.
- Aesculapius had five daughters, each possessing attributes related to health:
- Hygieia: Goddess of hygiene
- Iaso: Goddess of recuperation
- Aceso: Goddess of the healing process
- Aglaea: Goddess of good health
- Panacea: Goddess of universal remedy
Attributes of Apollo
- Associated with music, poetry, healing, and aspects of plague and disease.
Influential Figures in Greek Medicine
- Alcmaeon (circa 510 B.C.): Introduced the concept of balance among bodily fluids affecting health.
- Hippocrates (circa 460 B.C.): Most well-known Greek physician who developed a medical ethics code.
- The Four Humors:
- Choleric: yellow bile
- Melancholic: black bile
- Sanguine: blood
- Phlegmatic: phlegm
- Each humor connects to elements and bodily conditions:
  - HOT: Yellow bile, blood (Fire, Air)
  - WET: Phlegm (Water)
  - DRY: Black bile (Earth)

Aristotle (384-322 B.C.): Renowned philosopher and physician/scientist.
Theophrastus (372-287 B.C.): Student of Aristotle, authored Inquiry into Plants, regarded as the father of pharmacognosy.
Herophilus (335-280 B.C.): Developed pulse theory for diagnostics.
Dioscorides (40-90 A.D.): Authored De Materia Medica, cataloging hundreds of medicinal plants.
Pliny the Elder (23-79 A.D.): Created Natural History, a comprehensive 37-volume work with seven volumes focused on medicinal plants.

Galen (129-201 A.D.): Conducted studies using animals to understand human physiology, establishing experimental medicine.
Post-Roman Empire: The cessation of papyrus trade impacted the dissemination of medical knowledge, as papyrus was an inexpensive medium for literacy.
- Shift to parchment limited written knowledge and literacy to elites.
Medieval Medical Practices:
- All official practitioners associated with the Catholic Church.
- Medical schools established by the Church preserved Greek and Roman medical knowledge.
- Physicians required to practice with a priest present.
- Many peasants relied on female midwives and healers knowledgeable in medicinal herbs for care.

Survival of Pagan Healing: Despite widespread Catholicism, some pagan healing temples remained operational.
Use of Hallucinogenic Herbs: Medieval healers, often implicated in witch hunts, utilized hallucinogenic plants to mix remedies and commune spiritually.
- Examples include Henbane and Belladonna.
- Some potions provided the sensation of flying when applied.
Persecution of Healers: Traditional women healers were considered witches, labeled as such due to their healing practices, leading to hunts sanctioned by the Church.

Avicenna (980-1037 A.D.): Authored Canon of Medicine, influential in Europe until the 17th century.
Printing Revolution:
- Gutenberg's invention of the movable type printing press around 1440 enabled mass production of books, increasing literacy and access to medical knowledge.
- Introduction of paper from the Middle East facilitated this accessibility.

Revival of scientific inquiry during the Renaissance with figures like Leonardo da Vinci (1452-1519) and Andreas Vesalius (1514-1564), who published the first scientific anatomy text.
Continued publication of Dioscorides' works enhanced medicinal plant knowledge.
Paracelsus (1493-1541): Introduced the “Doctrine of Signatures,” integrating chemistry with medicine, moving away from solely herbal remedies.
Nicholas Culpeper: Translated Latin pharmacopoeias into English, democratizing medical knowledge.

Developments in the 1600s:
- William Harvey's revelation of blood circulation.
- Thomas Willis became known as the father of neuroscience; published On the Anatomy of the Brain in 1664.
- Anton von Leeuwenhoek's work led to advancements in microbiology through microscope innovations.
Immunology:
- Edward Jenner's use of cowpox for smallpox vaccination in 1796.
Germ Theory of Disease: Established by Louis Pasteur and Robert Koch in the mid-1800s.
Anesthesia: Demonstrated by dentist William Morton in the 1840s.
Antiseptic Practices: Advocated by Joseph Lister and Ignaz Semmelweis to minimize surgical infections.
Discovery of X-rays by William Roentgen in 1895 and radium by Marie Curie in 1898 reflect advancements in medical technology.

While Western medicine has largely diverged from plant-based treatments, a significant portion of the global population still relies on medicinal plants.
Example of Costa Rica: Despite access to modern medicine, many citizens continue to utilize traditional herbs for health care, illustrating the ongoing relevance of plant medicine.
- Various ailments are addressed by traditional remedies as shown in advertisements for medicinal plants displayed in Costa Rica, including treatments for conditions such as anemia, cancer, anxiety, and more.