Nutrition & Preventive Health

Baker promoted preventive medicine in the early twentieth century, helping establish disease prevention as a distinct field of healthcare practice. Her advocacy predated the formal framework of prevention levels later used in public health.

Routine childhood vaccination is credited with much of the increase in life expectancy achieved over the twentieth century. Each birth cohort receiving the routine schedule is estimated to cut direct health care costs by $9.9 billion and indirect societal costs by $33.4 billion.

In the 1940s the categorisation of prevention into primary, secondary and tertiary levels was articulated, giving public health a structured vocabulary for anticipatory action. The terminology remains in use today despite later criticism.

Cytological screening offered from the 1960s was followed by nearly a 50% decline in cervical cancer incidence and a roughly four-fold fall in mortality between 1950 and 1990. It became an early demonstration that population screening could shift disease burden.

Several Latin American developing nations organised routine cervical screening for women from the 1970s. This extended an established preventive screening capability beyond high-income countries.

The study showed that preventing heart attacks by treating high blood pressure early with drugs did not produce long-run savings. It opened a long-running debate about whether preventive care is economically self-financing.

Goldston criticised the primary/secondary/tertiary terminology as conflating prevention with clinical care. The original terms nonetheless persisted in public health practice.

Voters approved the additional tobacco excise despite $7.3 million spent by the tobacco industry in opposition. The ballot measure became a model for fiscal instruments in preventive health policy.

Since 1995 several grassroots movements have encouraged urban gardening on vacant lots, with food grown by local residents. The movements linked nutrition capability to community land use.

The school-based programme in Wuhan, China reduced the number of regular adolescent smokers, although it did not significantly reduce smoking initiation. It offered evidence on the limits of education-only tobacco prevention in a country with 350 million regular smokers.

The WHO identified interventions judged economically and operationally feasible given healthcare resources in the 42 nations accounting for 90% of all infant and child deaths. The list quantified how many deaths universal coverage could have prevented in 2000.

The 2004 study found that about half of US deaths in 2000 stemmed from preventable behaviours and exposures including tobacco, poor diet, inactivity and alcohol, with 400,000 annual deaths tied to diet and sedentary living. It became a key evidentiary basis for prioritising prevention.

The landmark joint study attributed an estimated 745,000 deaths from ischaemic heart disease and stroke in 2016 to long working hours. It expanded the scope of preventive health to working-time regulation.

The 2016 estimate put 2013 US spending at $101 billion on diabetes and a further $88 billion on heart disease, both substantially preventable. The figures quantified the fiscal stake in preventive health capability.

An amendment to Chapter 19-4100 of the Philadelphia Code established an excise tax of $0.015 per fluid ounce on distributors of beverages sweetened with caloric and non-caloric sweeteners. It was among the first US municipal soda taxes aimed at nutrition outcomes.

The May 2015 report recognised prevention's potential to improve health at individual and population levels while cutting healthcare expenditure. It projected that focused prevention and chronic disease treatment could avert 40 million chronic disease cases by 2023 and reduce treatment costs by $220 billion.

By 2015 the sugar-sweetened beverage excise tax, the TV AD advertising deductibility measure, active physical education policies and early care and education policies were nationally implemented. The CHOICES analysis found that the beverage tax, TV advertising and early-education measures produced net cost savings.

The study evaluated the costs and benefits in quality-adjusted life-years of lifestyle modification versus drug treatment for diabetes prevention. It contributed to the evidence base on whether behavioural prevention is economically competitive with pharmacotherapy.

The 2012 recommendations called for coordinated action across physical activity, food and beverage, marketing and messaging, healthcare and worksites, and schools, involving all sectors of society. It framed obesity prevention as a whole-of-government and whole-of-economy task.

The 2011 National Health Interview Survey was the first national US survey to include questions on food affordability. It connected nutrition security measurement to mainstream health surveillance.

The Patient Protection and Affordable Care Act became law on 23 March 2010. Its Section 2713 required all private Marketplace and non-grandfathered employer-sponsored plans to cover preventive services graded A or B by the US Preventive Services Task Force.

The study found childhood vaccination, smoking cessation, daily prophylactic aspirin and breast and colorectal cancer screening had the greatest potential to prevent premature death. Raising uptake to 90% of the population would yield net savings of $3.7 billion, only about 0.2% of 2006 US health expenditure.

The authors outlined the case that preventive measures only cost less than future treatment when a fairly large share of the population would otherwise fall ill. The analysis sharpened debate over the cost-effectiveness of universal preventive care.