Medicine
In the ancient Syrian city of Ebla, medical texts date back to 2500 BCE. These early records reveal that prehistoric medicine relied heavily on herbalism and animal parts used as ritualistic substances by priests or shamans. The Edwin Smith Papyrus from 1600 BCE stands as an early work on surgery in Egypt. Imhotep served as the first physician known by name during the third millennium BCE. The Kahun Gynaecological Papyrus from around 2000 BCE described gynecological diseases with specific detail. In China, archaeological evidence traces medicine back to the Bronze Age Shang dynasty through seeds for herbalism. The Huangdi Neijing text began writing in the second century BCE and compiled in the third century. Sushruta wrote the Sushruta Samhita, which described numerous surgical operations including the earliest forms of plastic surgery. Hippocrates introduced the Hippocratic Oath for physicians in Greece, establishing a rational approach to medicine. Galen performed many audacious operations including brain and eye surgeries during the Roman era.
Antonie van Leeuwenhoek observed bacteria and microorganisms with a microscope in 1676. Edward Jenner discovered the smallpox vaccine at the end of the 18th century. Robert Koch made discoveries around 1880 regarding the transmission of disease by bacteria. Antibiotics were discovered around 1900 following these earlier breakthroughs. Paul Ehrlich discovered arsphenamine or Salvarsan in 1908 after observing that bacteria took up toxic dyes human cells did not. The first major class of antibiotics was sulfa drugs derived by German chemists originally from azo dyes. Andreas Vesalius authored De humani corporis fabrica, an important book on human anatomy. William Harvey improved upon theories from the past regarding blood circulation. Hermann Boerhaave is sometimes referred to as a father of physiology due to his exemplary teaching in Leiden. Pierre Fauchard has been called the father of modern dentistry. Louis Pasteur developed vaccines alongside Edward Jenner. Alexander Fleming contributed significantly to medical science in the United Kingdom. Florence Nightingale also emerged as an important figure during this period of transformation.
A 2007 survey found that about 49% of medical interventions lacked sufficient evidence to support either benefit or harm. Physicians and mid-level practitioners personally assess patients to diagnose, prognose, treat, and prevent disease using clinical judgment. An initial medical encounter begins with a review of the patient's medical history and medical record followed by a medical interview and physical examination. Basic diagnostic devices like stethoscopes and tongue depressors are typically used during these encounters. Doctors may order blood tests, take biopsies, or prescribe pharmaceutical drugs after examining for signs and interviewing for symptoms. The medical decision-making process includes analysis and synthesis of all data to come up with possible diagnoses. Properly informing the patient of all relevant facts is an important part of developing trust within the doctor-patient relationship. The medical encounter is then documented in the medical record which serves as a legal document in many jurisdictions. Follow-up encounters follow the same general procedure though they may be shorter depending on complexity. About 90% of medical visits can be satisfactorily dealt with by primary care providers.
The Catholic Church remains the largest non-government provider of medical services in the world today. Advanced industrial countries provide medical services through systems of universal health care aiming to guarantee care for all through single-payer systems. Most tribal societies provide no guarantee of healthcare for the population as a whole. In low-income countries modern healthcare is often too expensive for the average person. International healthcare policy researchers have advocated that user fees be removed in these areas to ensure access. Transparency of information defines delivery systems affecting patient choice and professional incentives. Health spending varies by country resulting in differences in access to care and medicines. Telemedicine refers to preventive promotive and curative care delivery including remote clinical services. Telenursing experiences significant growth globally due to factors such as the need to reduce healthcare costs. An increasing aging and chronically ill population drives expanded healthcare coverage to distant rural regions. The World Health Organization recommends integrating palliative care as early as possible for any chronic illness. Separation of prescribing and dispensing differentiates pharmacists from physicians in Western traditions.
Surgical training in the United States requires a minimum of five years of residency after medical school. Sub-specialties of surgery often require seven or more years of additional training beyond general surgery. Fellowships can last an additional one to three years making total surgical training exceed a decade after medical school. Internal medicine specialists are commonly called internists in North America while elsewhere they are often called physicians. Resident work hours in medicine average about 60 hours per week in the US. In the UK all doctors are now required by law to work less than 48 hours per week on average. Clinical laboratory sciences apply laboratory techniques to diagnosis and management of patients under pathologist supervision. Diagnostic radiology concerns imaging of the body through x-rays computed tomography ultrasonography and nuclear magnetic resonance tomography. Pathology deals with study of diseases and morphologic physiologic changes produced by them. Anesthesiology manages perioperative care preventing derangement in vital organs functions during surgery. Emergency medicine diagnoses and treats acute life-threatening conditions including trauma surgical medical pediatric psychiatric emergencies. Family medicine serves as first port-of-call for patients with non-emergency medical problems across broad settings.
Medical ethics encompasses practical application in clinical settings alongside work on history philosophy theology and sociology. Autonomy grants the patient right to refuse or choose their treatment independently. Beneficence requires practitioners to act in best interest of the patient always. Justice concerns distribution of scarce health resources and decision of who gets what treatment fairly. Non-maleficence emphasizes first do no harm as a primary duty to patients. Respect for persons ensures both patient and treating person have right to be treated with dignity. Truthfulness and honesty concept has increased importance since historical events like Doctors Trial Nuremberg trials Tuskegee syphilis experiment. Doctors negligent or intentionally harmful in care face charges of medical malpractice subject to civil criminal professional sanctions. In most countries it is legal requirement for medical doctor to be licensed registered through university degree. Accreditation by medical board or equivalent national organization may ask applicant to pass exams restricting considerable legal authority. The European Union regulates profession of doctor of medicine under Directive 2005/36/EC covering member states EEA countries Switzerland.
Genomics and knowledge of human genetics influence medicine significantly as causative genes of monogenic disorders identified. Development of techniques in molecular biology evolution genetics influences medical technology practice decision-making. Evidence-based medicine establishes most effective algorithms through systematic reviews meta-analysis facilitated by modern global information science. Cochrane Collaboration leads movement establishing evidence-based practices through standard protocols disseminated to healthcare providers. A 2001 review of 160 Cochrane systematic reviews revealed insufficient evidence in 21.3% of cases according to two readers. Telemedicine includes telenursing telepalliative care telepharmacy telepsychiatry teleneurotherapy telenutrition telerehabilitation categories expanding globally. Telenursing helps address nurse shortages reduce travel time distances minimize hospital admissions effectively. Teleneurotherapy utilizes computers communications technology delivering neurotherapy remotely modulating neuronal plasticity online. Pharmacogenomics forms form of individualized medicine targeting specific physiological processes reducing side-effects. Modern biotechnology allows drugs designed for compatibility with body reducing adverse reactions significantly. Health informatics applies computers information technology to medicine relatively recently developed field. Veterinary medicine truly separated from human medicine in 1761 when Claude Bourgelat founded world first veterinary school Lyon France.
Common questions
When did the ancient Syrian city of Ebla produce medical texts?
The ancient Syrian city of Ebla produced medical texts dating back to 2500 BCE. These early records reveal that prehistoric medicine relied heavily on herbalism and animal parts used as ritualistic substances by priests or shamans.
Who was the first physician known by name in history?
Imhotep served as the first physician known by name during the third millennium BCE. He is associated with the Edwin Smith Papyrus from 1600 BCE which stands as an early work on surgery in Egypt.
What year did Louis Pasteur develop vaccines alongside Edward Jenner?
Louis Pasteur developed vaccines alongside Edward Jenner who discovered the smallpox vaccine at the end of the 18th century. This collaboration contributed significantly to modern immunology and disease prevention strategies.
How many years of residency are required for surgical training in the United States?
Surgical training in the United States requires a minimum of five years of residency after medical school. Sub-specialties often require seven or more years of additional training beyond general surgery making total surgical training exceed a decade after medical school.
When was veterinary medicine truly separated from human medicine?
Veterinary medicine was truly separated from human medicine in 1761 when Claude Bourgelat founded the world first veterinary school in Lyon France. This separation established distinct professional pathways for animal care and human health.