How extreme heat and cold affect aging and lifespan

The confluence of extreme heat and cold on aging and longevity

NIH-funded research Harvard Medical School · NIH-11212227

This project looks at how very hot and very cold weather affects the health and survival of people aged 65 and older, including those with Alzheimer's and related dementias.

Quick facts

Grant typeR01 grant
Study typeNIH-funded research
Funding institutionHarvard Medical School NIH-funded
Lab location1 site (Boston, United States)
Project IDNIH-11212227 on NIH RePORTER

What this research studies

From my perspective as a patient or caregiver, the team links weather records with hospital visits, emergency care, and death records to see how extreme heat and cold episodes affect older adults. They pay special attention to people living with Alzheimer's disease and related dementias to see whether memory loss or other symptoms make them more likely to be harmed by temperature extremes. The researchers will study patterns across different regions and seasons and explore biological and cognitive pathways that might explain higher risk. Their work combines health data, climate data, and clinical expertise to suggest ways to protect vulnerable older people as the climate changes.

Who could benefit from this research

Good fit: Ideal candidates are people aged 65 and older, particularly those with Alzheimer's disease or related dementias or those who have experienced heat- or cold-related hospital visits.

Not a fit: People under 65 or those without aging-related conditions and no exposure to extreme temperature events are unlikely to see direct benefits from this specific research.

Why it matters

Potential benefit: If successful, this work could identify which older adults—especially those with dementia—are most at risk during heatwaves or cold snaps so caregivers, clinicians, and public-health officials can better protect them.

How similar studies have performed: Previous studies have linked extreme temperatures to higher hospitalization and death in older adults, but work focused specifically on people with Alzheimer's and related dementias is more limited and this project aims to fill that gap.

Where this research is happening

Boston, United States

Researchers

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page below.
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.