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Suicide and Suicide Prevention
Seasonal Affective Disorder
Suicide and Suicide Prevention
SAD - Seasonal Affective Disorder
- Seasonal Affective Disorder
- Seasonal Affective Disorder (SAD) About light, depression & melatonin
- SAD at Depressioon Central
- Northern Light technologies - Manufacturer of the SADelite lamp.
- The SunBox® Company
- With regards to the reference for cool white being as effective as broad
spectrum, Bielski et al did a crossover study of eleven patients using 2
hours of 2500 lux light, comparing broad spectrum vs cool white. They
found that both were effective with no significant differences between
Ref: Bielski RJ, Mayor J, Rice J. Phototherapy with broad spectrum white
fluorescent light: a comparative study. Psychiatric Res 199; 43: 167-175
- The part of the visible spectrum which influences the pineal is actually
the blue-green segment. One could use a less intense light in that color
range, but to get sufficient blue-green from a full (white) spectrum light
you need about 10,000 lux of the latter. (about double the amount as I
recall). Blue-green lamps are not manufactured because it was assumed
that people would find their light bizarre to read or do other activities
by. Besides, unless there's something cheap that _emits_ blue-gree light,
such light would probably be obtained by producing a fuller spectrum at
some higher lux level and filtering off the uwanted part. So, might as
well use the white light.
- As for the halogen lamps:
some of the blue component of halogen bulb emissions, which is NOT stopped
by the glass lens (as is most of the harmful UV), is very damaging to the
Here are three studies on light therapy in dementia to manage day/night reversal seen in the demented
elderly (i.e. sleeping all day, awake all night):
- Lovell, B. B., S. Ancoli-Israel, et al. (1995). “Effect of bright light treatment on agitated behavior in institutionalized elderly subjects.” Psychiatry Res 57(1): 7-12.
This study examined whether exposure to bright light treatment would reduce agitated behavior in institutionalized elderly subjects. Six demented elderly subjects (mean age = 89.2 years) living in a skilled nursing facility were studied. Light (2500 lx) was administered for 2 hours in the morning for two 10-day periods. The Bliwise Agitation Behavior Rating Scale was used to rate agitated behavior once every 15 min between 16:00 h and 20:00 h during 3 days of baseline, the light treatment periods, and 5 days of posttreatment follow-up evaluation. The entire protocol was then repeated in an ABABA design. A planned comparison revealed a significant difference between light treatment days and nontreatment days, with less agitation being observed on treatment days. The study suggests the efficacy of the clinical use of bright light treatment to reduce agitation.
- Mishima, K., M. Okawa, et al. (1994). “Morning bright light therapy for sleep and behavior disorders in elderly patients with dementia.” Acta Psychiatr Scand 89(1): 1-7.
Fourteen inpatients with dementia showing sleep and behavior disorders (average age = 75 years), and 10 control elderly people (average age = 75 years) were carefully observed for 2 months. Four weeks of morning light therapy markedly improved sleep and behavior disorders in the dementia group. The measurement of sleep time and the serum melatonin values suggests that sleep and behavior disorders in the dementia group are related to decreases in the amplitude of the sleep-wake rhythm and decreases in the levels of melatonin secretions. Morning light therapy significantly increased total and nocturnal sleep time and significantly decreased daytime sleep time. These results indicate that morning bright light is a powerful synchronizer that can normalize disturbed sleep and substantially reduce the frequency of behavior disorders in elderly people with dementia.
- Van Someren, E. J., A. Kessler, et al. (1997). “Indirect bright light improves circadian rest-activity rhythm disturbances in demented patients.” Biol Psychiatry 41(9): 955-63.
Light is known to be an important modulator of circadian rhythms. We tested the hypothesis than an enduring increase in the daytime environmental illumination level improves rest-activity rhythm disturbances in demented patients. Actigraphy was performed before, during, and after 4 weeks of increased illumination in the living rooms of 22 patients with dementia clinically diagnosed as probable Alzheimer's disease, multi-infarct dementia, dementia associated with alcoholism, or normal pressure hydrocephalus. The results indicated that during increased illumination, the stability of the rest-activity rhythm increased in patients with intact vision, but not in visually impaired patients.
- AMERICAN HOSPICE FOUNDATION
- ASSOCIATION FOR DEATH EDUCATION AND COUNSELING (ADEC)
"ADEC is an international, multidisciplinary organization
dedicated to improving the quality of education,
counseling and care-giving pertaining to dying, death,
grief and loss . . ."
- CRISIS, GRIEF, AND HEALING
This site seeks to help people better understand the
many different paths of grieving.
- THE COMPASSIONATE FRIENDS
TCF is a national nonprofit, self-help support
organization whose members offer friendship and
understanding to other families who are grieving
the death of a child.
- PREGNANCY & INFANT LOSS RESOURCES
This site contains a list of resources associated with
perinatal loss. Topics include stillbirths, cord accidents,
recurrent miscarriage, and sudden infant death.
- NATIONAL SUDDEN INFANT DEATH SYNDROME
RESOURCE CENTER (NSRC)
This site "provides information services and technical
assistance on sudden infant death syndrome (SIDS)
and related topics. Our goal is to promote understanding
of SIDS and provide comfort to those affected by SIDS
through information sharing." Included is a publication
entitled "The Death of a Child The Grief of the Parents:
a Lifetime Journey."
- SUDDEN INFANT DEATH SYNDROME
AND OTHER INFANT DEATH (SIDS/OID)
This sites offers up-to-date information as
well as support for those who have been touched by
the tragedy of SIDS/OID.
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Last updated March 30, 2002
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