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NewsLa OpiniónOctober 25, 2026Los Angeles County

Swedish study links residential greenery to lower dementia risk in older adults

Photo: La Opinión

A 16-year Swedish study of 2,993 older adults found that individuals living with more vegetation within 110 meters of their homes experienced a 20% lower risk of developing dementia. Researchers from Stockholm University and the Karolinska Institute evaluated participants' cognitive health and used satellite imagery to measure surrounding greenery, noting the strongest link in the immediate neighborhood, particularly among women.

HealthUrban PlanningAging
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Why It Matters

The findings inform residential and urban planning decisions regarding the prioritization of green spaces to support cognitive health during aging.

Key Facts

  • A Swedish study published in Alzheimer’s & Dementia followed 2,993 older adults for 16 years.
  • Individuals with more vegetation within 110 meters of their homes had a 20% lower risk of dementia.
  • Out of the study participants, 477 developed dementia.
  • Researchers from Stockholm University and the Karolinska Institute used satellite imagery to measure vegetation around residences.
  • The strongest link between greenery and reduced dementia risk appeared in the radius closest to the home and was greater among women.
  • Study authors suggest green spaces promote physical activity, social contact, outdoor time, rest, and reductions in noise, pollution, and heat exposure.
  • Previous findings from the researchers associated residential green spaces with better sleep, improved self-reported mental health, and lower purchases of prescription antidepressants.

Who's Mentioned

OrganizationUniversidad de Estocolmo“Institution of the researchers who conducted the study”OrganizationNewsweek“Publication that interviewed study author Cecilia Stenfors”OrganizationAlzheimer’s & Dementia“Journal that published the Swedish study”OrganizationInstituto Karolinska“Institution involved in the research”PersonCecilia Stenfors“Associate professor of psychology at Stockholm University and first author of th”