To expand on the dementia issue, poor lighting can lead to disturbances in circadian rhythm and issues with sleep. Fixing this may help with dementia. Further

To expand on the dementia issue, poor lighting can lead to disturbances in circadian rhythm and issues with sleep. Fixing this may help with dementia. Further research needed in the area. Sources: http://www.webmd.com/alzheimers/news/20080610/bright-light-improves-dementia-symptoms http://www.webmd.com/alzheimers/news/20080610/bright-light-i... http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3553247/ http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3553247/