Outdoor extreme heat

Outdoor extreme heat has been studied in 1 paper since 2026: 1 observational study in people; 1 in the past year. The newest story, Oct 23, 2026: “Extreme heat linked to higher dementia risk in older US adults”.

Exposure

1 paper studies it2 findingsUpdated Oct 1, 2026

1 new paper in 30 daysSee all 1

“had 14% (95% confidence interval [CI] = 1.01 to 1.27) and 23% (95% CI = 1.08 to 1.40) higher risks of dementia onset, respectively.”

Outdoor extreme heat-related dementia risk and the role of socioeconomic disparities: evidence from 20 years of data on US older adultsAlzheimer's & dementia : the journal of the Alzheimer's Association2026doi:10.1002/alz.71857

1 of its findings points the other way.

1 lab in 1 country
1 finding against

Funder: Alzheimer's Association

Humans1

What did studies of Outdoor extreme heat find?

Studies of Outdoor extreme heat measured 1 outcome; the most studied are dementia (1 study).

Dementia

no changein humans1

1 study

Outdoor extreme heat has no effect on dementia in humans.
“No associations were found for "Extreme Caution" heat.”
Humans"Extreme Caution" heat (90°F to 102°F [32.2°C to 39.3°C])5-year exposuren = 28,512
Extreme heat linked to higher dementia risk in older US adults
Alzheimer's & dementia : the journal of the Alzheimer's AssociationOct 1, 2026

What is Outdoor extreme heat linked with?

Studies link Outdoor extreme heat with 1 measure, most often dementia (1 study).

Dementia

upin humans1

1 study

Outdoor extreme heat is associated with dementia in humans (14% higher dementia onset risk; 95% CI = 1.01 to 1.27).
“had 14% (95% confidence interval [CI] = 1.01 to 1.27) and 23% (95% CI = 1.08 to 1.40) higher risks of dementia onset, respectively.”
HumansModerate versus low outdoor heat burden"Danger+" heat (≥103°F [39.4°C])0.4 to 1.8 days/year versus ≤0.2 days/year5-year exposuren = 28,512
Extreme heat linked to higher dementia risk in older US adults
Alzheimer's & dementia : the journal of the Alzheimer's AssociationOct 1, 2026

Latest

1 paper in 12 months

Alzheimer's & DementiaOct 23

Extreme heat linked to higher dementia risk in older US adults

Relative dementia risk was 14% higher in the moderate extreme-heat exposure group and 23% higher in the high-exposure group than in the low-exposure group.Relative dementia risk was 14% higher in the moderate extreme-heat exposure group and 23% higher in the high-exposure group than in the low-exposure group.

Cohort · 28,512 peopleDementia

Paper

Outdoor extreme heat

What did studies of Outdoor extreme heat find?

What is Outdoor extreme heat linked with?

Latest

Extreme heat linked to higher dementia risk in older US adults

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