Navigation Links
Lack of Light and Seasonal Depression - What's the Link? From the Harvard Health Letter
Date:12/17/2007

BOSTON, Dec. 17 /PRNewswire-USNewswire/ --- People troubled by depression usually experience their dark moods in an on-again, off-again fashion. In that respect, seasonal affective disorder (SAD) differs only in that the oscillations follow a seasonal schedule, with the depression usually starting in the fall and lasting through the spring. Lack of light is often blamed for SAD, but just how darker days cause depression in SAD sufferers is still in question, reports the January 2008 issue of the Harvard Health Letter.

Experts debate whether it has been proved that lack of sunlight in winter triggers SAD, but there's certainly circumstantial evidence to support the connection. How might lack of light cause depression? The Harvard Health Letter discusses three theories:

1. The root cause may be insensitivity to light. Most of us go

through winter on a relatively even keel because exposure to

indoor lighting helps offset the lack of natural light, but

indoor light may be too weak for SAD sufferers.

2. There are neural pathways from the eyes' retinas to parts of

the brain that help put many of our physiological processes

on a 24-hour cycle. Lack of light may put people with SAD out

of phase with their biological clocks: awake and active when

their internal timers want them snug in bed.

3. A lack of light, or insensitivity to it, may disrupt

brain processes influenced by serotonin and dopamine, brain

chemicals that play a role in mood.

Light therapy, which involves sitting in front of a bright light for a short time each day, helps some people who suffer from SAD. But antidepressant medications may work just as well, says the Harvard Health Letter.

Also in this issue:

-- Treating the common cold

-- Illegal use of human growth hormone

-- Types of vitamin E

-- Treating Bell's palsy

-- Low-carb diet and mood

-- By the way, doctor: Warfarin after illness

The Harvard Health Letter is available from Harvard Health Publications, the publishing division of Harvard Medical School, for $28 per year. Subscribe at http://www.health.harvard.edu/health or by calling 1-877-649-9457 (toll free).

Media: Contact Christine Junge at Christine_Junge@hms.harvard.edu for a complimentary copy of the newsletter, or to receive our press releases directly.


'/>"/>
SOURCE Harvard Health Letter
Copyright©2007 PR Newswire.
All rights reserved

Related medicine news :

1. Stanford study highlights cost-effective method of lowering heart disease risks
2. Study shines more light on benefit of vitamin D in fighting cancer
3. Bacteria See the Light
4. Quantum light beams good for fast technology
5. Free will takes flight: how our brains respond to an approaching menace
6. New MRI finding sheds light on multiple sclerosis disease progressio
7. RA Drugs Linked to Slight Skin Cancer Risk
8. QUANTEL Intends to Strengthen its Dermatology/ Aesthetics Division With the Acquisition of WaveLight Aesthetic GmbH
9. REACH Registry Highlights That Patients With Peripheral Arterial Disease (PAD) Suffer High Rates of Heart Attack, Stroke, Hospitalization, and Death
10. Cardiovascular Technologies to be Highlighted at 5th Annual Cleveland Clinic Medical Innovation Summit, Oct. 1-3
11. First Circuit Court of Appeals Rules Against Philip Morris in Lights Class Action
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/8/2016)... ... December 08, 2016 , ... The ... the Undersea and Hyperbaric Medical Society (UHMS), the leading authority in hyperbaric medicine. ... safety. Only a few hospitals and facilities have earned this distinction. This is ...
(Date:12/8/2016)... Islandia, NY (PRWEB) , ... December 08, 2016 ... ... company, is pleased to announce that “Natural Language Processing–Enabled and Conventional Data Capture ... published in JMIR Medical Informatics . , Results of the comparative usability ...
(Date:12/8/2016)... (PRWEB) , ... December 08, 2016 , ... CURE Media ... centers and advocacy groups, has aligned with Upstage Lung Cancer in efforts to combat ... the announcement, Michael J. Hennessy, Jr said, “CURE Media Group is honored to team ...
(Date:12/8/2016)... ... 08, 2016 , ... Premier Fitness Camp (PFC) and The Chopra Center for ... and wellness program, at their world headquarters of Omni La Costa Resort & Spa ... to anyone seeking weight loss, personal development, a healthy lifestyle, or mental and physical ...
(Date:12/8/2016)... ... 2016 , ... Catalent Pharma Solutions, the leading global provider ... products, today announced that it had joined the Pharmaceutical Supply Chain Initiative (PSCI). ... unite pharmaceutical and healthcare companies that share a vision of better, social, environmental ...
Breaking Medicine News(10 mins):
(Date:12/8/2016)... 8, 2016  Pennsylvania Physician General Dr. ... Alcohol Programs Gary Tennis released safe ... as benzodiazepines, developed with the help of a ... that are frequently prescribed for anxiety or insomnia," ... with opioid pain medications, benzodiazepines pose a significant ...
(Date:12/8/2016)... , Dec. 8, 2016  EIP Pharma, LLC ... obtained proof-of-mechanism for neflamapimod (previously code named VX-745), ... 2a clinical trials that demonstrated significant Alzheimer,s disease ... (12-week treatment) and Study 303 (6-week treatment) are ... in Alzheimer,s Disease (CTAD) scientific conference in ...
(Date:12/8/2016)... Dec 8, 2016 Research and Markets has ... to their offering. ... The global chromatography market to grow at ... Chromatography Market 2016-2020, has been prepared based on an in-depth market analysis ... its growth prospects over the coming years. The report also includes a ...
Breaking Medicine Technology: