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Providing light early in the evening can help seniors sleep better at night and be more alert during the day because the light delays the biological, circadian clock. [13] Many studies have shown that when the elderly are exposed to bright white light, the elderly individual saw improved sleep efficiency.
Here's how to distinguish "sundowning"—agitation or confusion later in the day in dementia patients—from typical aging, from doctors who treat older adults. ... to natural light during the day ...
Light therapy can help regulate circadian rhythms. Older adults can struggle to receive consistent sunlight due to bedrest and institutional limitations. [12] Mood and spatial positioning improvements have been noted in people experiencing dementia with exposure to indoor light, but the evidence is currently inconclusive. [21]
This isn’t the first time that better sleep has been linked with a lower risk of dementia: A study published in October even found that people with sleep apnea are more likely to develop dementia.
Studies show that light therapy helps reduce the debilitating and depressive behaviors of SAD, such as excessive sleepiness and fatigue, with results lasting for at least 1 month. Light therapy is preferred over antidepressants in the treatment of SAD because it is a relatively safe and easy therapy. [ 20 ]
A new study offers an explanation as to how deep sleep — also known as slow wave sleep — helps support the formation of memories in the brain, which could help with preventing dementia.
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