Lighting and Alzheimer’s disease and related dementias: Spotlight on sleep and depression

M. G. Figueiro, H. C. Kales

Research output: Contribution to journalArticlepeer-review


Alzheimer’s disease and related dementias is the collective term for a progressive neurodegenerative disease for which there is presently no cure. This paper focuses on two symptoms of the disease, sleep disturbances and depression, and discusses how light can be used as a non-pharmacological intervention to mitigate their negative effects. Bright days and dark nights are needed for health and well-being, but the present components of the built environment, especially those places where older adults spend most of their days, are too dimly illuminated during the day and too bright at night. To be effective light needs to be correctly specified, implemented and measured. Yet, without the appropriate specification and measurement of the stimulus, researchers will not be able to successfully demonstrate positive results in the field, nor will lighting designers and specifiers have the confidence to implement lighting solutions for promoting better sleep and mood in this population.

Original languageEnglish (US)
Pages (from-to)405-422
Number of pages18
JournalLighting Research and Technology
Issue number5
StatePublished - Aug 2021

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


Dive into the research topics of 'Lighting and Alzheimer’s disease and related dementias: Spotlight on sleep and depression'. Together they form a unique fingerprint.

Cite this