Editing Life extension (section)

===Societal strategies===
{{See also|#Ethics and politics|#Scientific research|Clinical trial|Metascience|Telehealth|Health economics|Health education|Medical research}}
[[File:Life expectancy vs healthcare spending.jpg|thumb|Life expectancy vs healthcare spending of rich OECD countries. [[List of countries by total health expenditure per capita|US average of $10,447 in 2018]].<ref>{{cite journal |author-link1=Max Roser |vauthors=Roser M |date=26 May 2017 |title=Link between health spending and life expectancy: US is an outlier |url=https://ourworldindata.org/the-link-between-life-expectancy-and-health-spending-us-focus |journal=[[Our World in Data]]}} Click the sources tab under the chart for info on the countries, healthcare expenditures, and data sources. See the later version of the chart [https://ourworldindata.org/us-life-expectancy-low here].</ref>]]
Collectively, addressing [[List of causes of death by rate|common causes of death]] could extend lifespans of populations and humanity overall. For instance, a 2020 study indicates that the global mean [[loss of life expectancy]] (LLE) from [[air pollution]] in 2015 was 2.9 years, substantially more than, for example, 0.3 years from all forms of direct violence, albeit a significant fraction of the LLE (a measure similar to [[years of potential life lost]]) is considered to be unavoidable.<ref>{{cite journal | vauthors = Lelieveld J, Pozzer A, Pöschl U, Fnais M, Haines A, Münzel T | title = Loss of life expectancy from air pollution compared to other risk factors: a worldwide perspective | journal = Cardiovascular Research | volume = 116 | issue = 11 | pages = 1910–1917 | date = September 2020 | pmid = 32123898 | pmc = 7449554 | doi = 10.1093/cvr/cvaa025 }}</ref>

Regular [[Screening (medicine)|screening]] and doctor visits has been suggested as a lifestyle-societal intervention.<ref name="niha"/> (See also: [[medical test]] and [[biomarker (medicine)|biomarker]])

[[Health policy]] and changes to standard healthcare could support the adoption of the field's conclusions – a review suggests that the longevity diet would be a "valuable complement to standard healthcare and that, taken as a preventative measure, it could aid in avoiding morbidity, sustaining health into advanced age" as a form of [[preventive healthcare]].<ref name="Longo-2022"/>

It has been suggested that in terms of healthy diets, Mediterranean-style diets could be promoted by countries for ensuring healthy-by-default choices ("to ensure the healthiest choice is the easiest choice") and with highly effective measures including [[Nutrition education|dietary education]], food [[checklist]]s and [[recipe]]s that are "simple, palatable, and affordable".<ref>{{cite journal | vauthors = Murphy KJ, Parletta N | title = Implementing a Mediterranean-Style Diet Outside the Mediterranean Region | journal = Current Atherosclerosis Reports | volume = 20 | issue = 6 | pages = 28 | date = May 2018 | pmid = 29728772 | doi = 10.1007/s11883-018-0732-z | s2cid = 21658334 }}</ref>

A review suggests that "targeting the aging process per se may be a far more effective approach to prevent or delay aging-associated pathologies than treatments specifically targeted to particular clinical conditions".<ref>{{cite journal | vauthors = Vaiserman A, Lushchak O | title = Implementation of longevity-promoting supplements and medications in public health practice: achievements, challenges and future perspectives | journal = Journal of Translational Medicine | volume = 15 | issue = 1 | pages = 160 | date = July 2017 | pmid = 28728596 | pmc = 5520340 | doi = 10.1186/s12967-017-1259-8 | doi-access = free }}</ref>