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daylight

This shows a room full of speakers bathed in golden light.

·October 27, 2025·8 min read

Daily Light and Sound Therapy May Slow Alzheimer’s Decline

A long-term study found that daily 40Hz light and sound stimulation may help slow cognitive decline in people with late-onset Alzheimer’s disease. After two years of treatment, participants maintained stronger cognitive performance than typical Alzheimer’s patients and showed reduced levels of tau protein, a key disease biomarker.

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·September 27, 2018·4 min read

Postnatal Depression Could be Linked to Fewer Daylight Hours During Late Pregnancy

A new study reports women who are in their third trimester of pregnancy during months with less day light are at an increased risk of developing postnatal depression.