Light levels and dementia Margaret Edwards Lead for London Region Housing LIN

Light and Health Dutch study – impact of high light levels + melatonin 5% reduced cognitive decline 19% reduced symptoms of depression 53% reduced physical decline 9% reduced night restlessness 9% reduced agitation + M

Daylight (its free) Melatonin - the rhythm of life Improved sleep patterns Get outside for an hour each day Let daylight in – unobstructed windows & skylights

Navigation Back lit light switches – at room entrance and slightly lower than normal Daylight - better colour contrast Avoid glare & pooling Graduated light indoors outdoors

Occupation Adjustable and flexible task lights Lighting in cupboards and wardrobes Overhead lights by mirrors create shadows under chin, light on each side illuminates the face better Greenhouses?

Interaction Seeing faces clearly Recognising familiar people Reading body language Joining in activities