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Extreme temperature

Extreme temperature has been studied in 4 papers since 2022: 2 observational studies in people, 2 reviews. The newest paper, Sep 3, 2024: “Projections of Extreme Temperature-Related Deaths in the US”.

Exposure

4 papers study it4 findingsUpdated

See all 4 papers on extreme temperature

At a glance

Independent labs found the same change in people. 3 independent labs in 3 countries.

“extreme temperature days were associated with 8248.6 (95% CI, 4242.6-12 254.6) deaths annually in the current period”
Projections of Extreme Temperature-Related Deaths in the USJAMA network open2024doi:10.1001/jamanetworkopen.2024.34942

None of its findings points the other way.

Humans: replicated by independent labs. Cells, worms or flies and mice: nothing yet.

C, W, M, H: cells, worms or flies, mice, humans. Dark: independent labs found the same change there. Light: one lab or one study. Outline: nothing yet.

Labs are independent when their papers share no last author and no institution.

Company ties: findings with an author at a company, or from a paper whose competing-interests statement declares ties to one.

  • 3 independent labs in 3 countries
  • Funders: Abiomed and others
  • 1 of 3 findings with company ties
  • Humans2

What is extreme temperature linked with?

2

Studies link extreme temperature with 2 measures, most often mortality (2 studies) and cardiovascular mortality (1).

Mortality

upin humans2upin silico1

2 studies

  1. Extreme temperature is associated with mortality in humans (contiguous US counties) (8248.6 (95% CI, 4242.6-12 254.6) deaths annually).

    “extreme temperature days were associated with 8248.6 (95% CI, 4242.6-12 254.6) deaths annually in the current period”

    Humanscontiguous US countiesn = 30,924,133

    Projections of Extreme Temperature-Related Deaths in the US

    JAMA network open

  2. Extreme temperature is associated with mortality in humans (high and low temperatures).

    “Both high and low temperatures had a noticeable impact on non-accidental deaths, with heat effects occurring immediately and lasting 2-3 days, while cold effects lasted for 6-12 days.”

    Humanshigh and low temperaturesheat effects lasting 2-3 days, cold effects lasting 6-12 days

    Coupling the effects of extreme temperature and air pollution on non-accidental mortality in Rencheng, China

    Frontiers in public health

  3. Extreme temperature predicts mortality in silico (projected mid-21st century period (2036-2065), SSP2-4.5 scenario) (19 348.7 (95% CI, 11 388.7-27 308.6) projected deaths).

    “with 19 348.7 (95% CI, 11 388.7-27 308.6) projected deaths in the SSP2-4.5 scenario”

    In silicoprojected mid-21st century period (2036-2065), SSP2-4.5 scenario

    Projections of Extreme Temperature-Related Deaths in the US

    JAMA network open

Cardiovascular mortality

upin humans1

1 study

  1. Extreme temperature is associated with cardiovascular mortality in humans.

    “Exposure to extreme temperature was associated with increased cardiovascular mortality and morbidity, but the magnitude varied with temperature and duration of exposure.”

    Review

    Climate Change and Cardiovascular Health: A Systematic Review

    JAMA cardiology

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