Sunset can be a time of great distress for Alzheimer sufferers who sometimes recall that it was the time when they travelled home for the evening or waited for a loved one to return.

Patients who experience good safe periods of sunlight during the day seem to fare better than those who remain in gloomy situations. This is self-evident.

Appropriate exposure to sunlight is good for all of use in maintaining a positive mood and outlook. That great star in the sky is the perfect beacon for sustainable mental health. Maybe that is why so many of use welcome the first appearance of the sun in the morning.