Accounts for up to 1/2 the reduction in death rates
Better nutrition increases resistance to infection, and therefore, survival
McKeown (1972) argues that improved nutrition accounts for up to 1/2 the reduction in death rates
Improved nutrition
Women get smaller portions but live longer than males
Improved nutrition
Many died from infectious diseases like the measles
Death rate
Number of deaths per 1,000 of the population per year
The death rate has fallen since 1870, despite periods of economic depression and war, and has been declining slightly since 1950
Life expectancy
How long on average a person born in a given year can expect to live
Life expectancy has greatly increased since 1900
In 1900, males lived to 50 and females lived to 57, while in 2013 it was 90.7 for males and 94 for females
One reason for low life expectancy before was because of a high infant mortality rate
If greater longevity continues, we'll have radical longevity with more people aged over 100, 1M by year 2300 compared to around 10K now
Medical improvements
Improved medical knowledge, techniques and organisation helped reduce death rates after 1950
Advances include blood transfusions, improved maternity services, and the NHS being set up in 1948
In recent times, by-pass surgeries have reduced heart diseased deaths by 1/3
The greatest fall in recent decades isn't medical advancement, but simply from a reduction in people smoking
Obesity has replaced smoking in the 21st century as the new lifestyle epidemic, with % of all adults being obese in 2012
Even though obesity has risen, drug therapies have kept deaths from it low
We're moving to an 'American' health culture where lifestyles are unhealthy, but medications keep the lifespan long
Class, gender and regional factors
Even with an overall reduction in death rates and increase in life expectancy, there are still class, gender and regional differences
People living in the poorest areas of England die on average 7 years earlier than those in richest areas, while the average difference in disability-free life expectancy is 17 years
Women generally live longer than men though the gap has narrowed due to changes in employment and lifestyle (like more women smoking)
Those living in the North and Scotland have a lower life expectancy than those in the South, while working-class men in unskilled/routine jobs are 3x as likely to die before 65 compared to men in managerial/professional jobs
Public health measures
More central/local government with the power to pass/enforce laws led to improvements in public health and quality of the environment
This included improved housing, purer drinking water, laws to combat food/drink adulteration, pasteurisation of milk, and improved sewage disposal
The Clean Air Act reduced air pollution, like the smog that led to 4,000 deaths in 5 days in 1952
Demography
Reasons for the fall in the death rate
Up to 1970, about three-quarters of the decline was due to a fall in deaths from infectious diseases
This decline was largely brought about by changing social factors, including improved nutrition, medical improvements, and public health improvements