H24: Modern Medicine and Health

📖 The NHS Since 1948

NHS Reorganisation

• 1948-1974: The original structure had three tiers: hospital services, GP services, and community health services, managed separately
• 1974: The NHS was reorganised into a unified structure under regional health authorities
• 1990 (NHS and Community Care Act): Introduced the "internal market" - separating purchasers (health authorities) from providers (hospitals), creating competition within the NHS
• 1997-2010 (New Labour): Abolished the internal market, then reintroduced it; increased NHS spending dramatically (from £44 billion in 1997 to £110 billion in 2010)
• 2012 (Health and Social Care Act): Gave GPs control of purchasing through Clinical Commissioning Groups; increased private sector involvement

🔬 Advances in Medical Technology

X-Rays

• Wilhelm Röntgen discovered X-rays in 1895
• Within months, X-rays were being used in hospitals to diagnose fractures and locate foreign objects
• By WWI, mobile X-ray units (developed by Marie Curie) were used on the Western Front
• X-rays transformed diagnosis, allowing doctors to see inside the body without surgery for the first time

CT and MRI Scanners

• CT (Computerised Tomography) scanner: Developed by Godfrey Hounsfield and Allan Cormack in 1971; the first CT scan was performed at Atkinson Morley Hospital, Wimbledon, on 1 October 1971. They won the Nobel Prize in 1979
• CT scans combine X-rays with computer processing to create detailed cross-sectional images of the body
• MRI (Magnetic Resonance Imaging) scanner: Developed in the 1970s-80s; the first MRI scan of a human body was performed in 1977
• MRI uses strong magnetic fields and radio waves to produce detailed images of soft tissues (brain, organs, ligaments) without harmful radiation
• By 2020, the NHS performed over 4 million CT scans and 3 million MRI scans per year

Keyhole Surgery

• Keyhole (laparoscopic) surgery uses small incisions and a camera (endoscope) to perform operations inside the body
• The first laparoscopic appendectomy was performed in 1983 by the German surgeon Kurt Semm
• The first laparoscopic cholecystectomy (gallbladder removal) was performed in 1985 by Erich Mühe
• Advantages over traditional open surgery: smaller incisions, less pain, faster recovery, reduced infection risk, shorter hospital stays
• By the 2000s, keyhole surgery became standard for gallbladder removal, appendectomies, and many gynaecological procedures

🫀 Transplant Surgery

Key Milestones in Transplant Surgery

• 1954: First successful kidney transplant - performed by Joseph Murray in Boston, USA, between identical twin brothers Ronald and Richard Herrick. The recipient lived for 8 years
• 1963: First liver transplant - performed by Thomas Starzl in Denver, Colorado (patient survived 22 days)
• 1963: First lung transplant - performed by James Hardy at the University of Mississippi
• 3 December 1967: First human heart transplant - performed by Dr Christiaan Barnard at Groote Schuur Hospital in Cape Town, South Africa. The patient, Louis Washkansky, lived for 18 days before dying of pneumonia
• 1968: Britain's first heart transplant - performed by Donald Ross at the National Heart Hospital in London on 3 May 1968

The Problem of Rejection

• The body's immune system naturally attacks foreign tissue, causing transplant rejection
• The development of immunosuppressive drugs was essential for transplant success
• Azathioprine (developed in the 1960s) was the first effective anti-rejection drug
• Cyclosporine (discovered in 1969, approved in 1983) revolutionised transplantation by dramatically reducing rejection rates
• By 2020, over 50,000 organ transplants were performed worldwide each year

💊 The Antibiotics Crisis

The Problem of Antibiotic Resistance

• Since Fleming discovered penicillin in 1928, antibiotics have saved over 200 million lives worldwide
• However, the overuse and misuse of antibiotics has led to the evolution of antibiotic-resistant bacteria
• Bacteria that survive antibiotic treatment multiply and pass on their resistance genes
• By 2023, the WHO declared antibiotic resistance "one of the biggest threats to global health"
• Approximately 5 million deaths per year worldwide are associated with antibiotic-resistant infections

Causes of Antibiotic Resistance

• Over-prescription: doctors prescribing antibiotics for viral infections (against which they are useless)
• Patient non-compliance: not completing the full course of antibiotics, allowing surviving bacteria to develop resistance
• Agricultural use: antibiotics widely used in farming to promote animal growth (banned in the EU in 2006)
• Over-the-counter sales: in many countries, antibiotics can be bought without a prescription
• Insufficient new drug development: pharmaceutical companies have developed few new antibiotics since the 1980s because they are not profitable enough

💰 NHS Funding Challenges

Rising Costs

• The NHS budget has grown from £9 billion in 1948 to over £180 billion today
• Cost pressures include: an ageing population requiring more care; expensive new drugs and treatments; rising staff costs; increasing patient expectations
• The NHS now spends approximately 10% of its budget on diabetes care alone
• Mental health services have been chronically underfunded, receiving only about 11% of the budget despite accounting for 23% of the disease burden

The Funding Debate

• Some argue the NHS needs more government funding and higher taxes
• Others argue for greater efficiency, reorganisation, and private sector involvement
• Prescription charges have been introduced, abolished, and reintroduced at various times
• Private health insurance remains an alternative for those who can afford it, but the NHS principle of free care at the point of use has largely been maintained

🌍 21st Century Health Challenges

Obesity

• By 2023, approximately 28% of adults in England were classified as obese (BMI over 30), and a further 36% were overweight
• Obesity increases the risk of type 2 diabetes, heart disease, stroke, and certain cancers
• Childhood obesity has risen dramatically: approximately 10% of 4-5 year olds and 22% of 10-11 year olds are obese
• The NHS spends over £6 billion per year treating obesity-related conditions
• Causes include: sedentary lifestyles, processed food, larger portion sizes, food advertising, and socioeconomic factors

Ageing Population

• In 1948, approximately 11% of the UK population was over 65; by 2023, this had risen to over 19%
• The number of people over 85 has more than doubled since 1990
• An ageing population creates enormous pressure on the NHS and social care system
• Older people are more likely to have multiple long-term conditions requiring ongoing care
• Dementia affects over 900,000 people in the UK, with numbers projected to rise to over 1.6 million by 2040

Mental Health

• Approximately 1 in 4 people in the UK experience a mental health problem each year
• Depression and anxiety are the most common conditions
• Historically, mental health was neglected: mentally ill people were confined to asylums and given minimal treatment
• The move towards "care in the community" from the 1960s onwards closed many asylums but often failed to provide adequate support
• Mental health services remain underfunded relative to the scale of need

COVID-19 Pandemic (2020-2022)

• The first confirmed COVID-19 cases in the UK were identified on 31 January 2020
• The UK entered its first lockdown on 23 March 2020
• By the end of 2022, over 200,000 people in the UK had died with COVID-19 on their death certificate
• The NHS was placed under unprecedented strain, with hospitals reaching capacity and staff exhausted
• The development of vaccines in record time (the Pfizer-BioNTech vaccine was approved in the UK on 2 December 2020) demonstrated the power of modern medical science

📊 Progress and Continuity Since 1948

❓ Practice Questions

✅ Answers

1. CT scanners (developed 1971) use X-rays and computer processing to create detailed cross-sectional images of the body, allowing doctors to diagnose tumours, internal bleeding, and organ damage without invasive surgery. MRI scanners (developed 1977) use magnetic fields to create detailed images of soft tissues like the brain.
2. The first heart transplant (3 December 1967 by Christiaan Barnard) was significant because: it proved that a human heart could be transplanted and function in another body; it demonstrated the advanced state of surgical technique; it opened the door to further transplant developments; it showed that organ replacement was a viable treatment for end-stage heart disease. However, the patient survived only 18 days, highlighting the problem of rejection.
3. Antibiotic resistance is a major threat because: if antibiotics become ineffective, common infections like pneumonia could once again become deadly; routine surgery (like hip replacements or caesarean sections) could become life-threatening without effective antibiotics to prevent infection; approximately 5 million deaths per year are already associated with resistant infections; very few new antibiotics are being developed because they are not profitable for pharmaceutical companies.
4. The NHS has significantly improved health since 1948: life expectancy has risen from 66 to 81 for men; infant mortality has fallen from 34 to under 4 per 1,000; 8.5 million dental treatments were provided in the first year alone; vaccination programmes have eliminated diseases like polio; technology has transformed treatment. However, challenges remain: health inequalities persist; funding is under constant pressure; waiting lists have grown; lifestyle diseases are increasing.
5. A balanced answer should discuss: the role of technology (X-rays, CT/MRI, keyhole surgery, transplant surgery); the role of pharmaceuticals (antibiotics, immunosuppressants, vaccines); the role of the NHS (organising and providing universal access); the role of government funding; the role of individual scientists and doctors. Argue that technology has been crucial but has only been effective because of the NHS providing access and government providing funding.
6. The ageing population is a challenge because: over 19% of the UK population is now over 65, compared to 11% in 1948; older people are more likely to have multiple long-term conditions requiring ongoing, expensive care; the number of people with dementia is projected to reach 1.6 million by 2040; social care costs are rising alongside NHS costs; a smaller working-age population is paying taxes to support a larger retired population.

🎯 Exam Tips

• Always use specific dates: first heart transplant 3 December 1967, CT scanner 1971, MRI 1977
• For technology questions, explain the impact of the technology, not just when it was invented
• Link modern challenges back to earlier periods - antibiotic resistance echoes the pre-antibiotic era
• Use statistics: 28% obesity rate, 19% over 65, 5 million resistance deaths globally
• For evaluation questions, balance achievements against ongoing challenges
• Remember the COVID-19 pandemic as a recent example of both the NHS's vulnerability and its capacity for rapid response
• Connect the NHS to the broader theme of government responsibility for health

📝 Exam Technique

⚠️ Common Errors

✍️ Model Answer

📊 AO Deep Dive

📝 Exam Questions by Topic

• AQA Past Papers - Topic Questions -- AQA
• Edexcel Past Papers - Topic Questions -- Edexcel
• OCR Past Papers - Topic Questions -- OCR
• Eduqas Past Papers - Topic Questions -- Eduqas
• CCEA Past Papers - Topic Questions -- CCEA

🎬 Video Resources

• BBC Bitesize - GCSE History
• History Hit
• Mr IB History