ProHealth health Vitamin and Natural Supplement Store and Health
Home  |  Log In  |  My Account  |  View Cart  View Your ProHealth Vitamin and Supplement Shopping Cart
800-366-6056  |  Contact Us  |  Help
Facebook Google Plus
Fibromyalgia  Chronic Fatigue Syndrome & M.E.  Lyme Disease  Natural Wellness  Supplement News  Forums  Our Story
Store     Brands   |   A-Z Index   |   Best Sellers   |   New Products   |   Deals & Specials   |   Under $10   |   SmartSavings Club

Trending News

Vitamin D supplements, sleep could help manage pain

Bacopa: The Herb That May Increase Your Brain Power

Lilac Oil: More Than Just for Fragrance

Eat More Yogurt and Avoid Osteoporosis

Safflower: An Economically Important Herb That Can Benefit Humans and Animals Alike

What Is Bilberry Good For?

Coffee, herbal tea may help prevent liver fibrosis

Crafty Uses for Carrot Seed Oil

Resveratrol Improves Arteries

Higher omega 3 levels linked to improved brain blood flow

 
Print Page
Email Article

Evidence of a Biological Effect of Light Therapy on the Retina of Patients with Seasonal Affective Disorder - Source: Biological Psychiatry, Jan 7, 2009

  [ 10 votes ]   [ Discuss This Article ]
By Marie-Pier Lavoie, Marc Hebert, et al. • www.ProHealth.com • February 8, 2009


Background: Retinal sensitivity anomalies have been reported in patients affected by seasonal affective disorder (SAD). We used the electroretinogram (ERG) to assess seasonal change in retinal function in patients with SAD and healthy participants, as well as in patients following 4 weeks of light therapy.

Methods: ERG assessments were obtained in 22 SAD patients (2 men, 20 women, mean age 31 +/- 9 years) in the fall/winter season before and after 2 and 4 weeks of light therapy and in summertime. Matched healthy participants (2 men, 14 women; mean age 29 +/- 8 years) were evaluated once in the fall/winter and once in summer. The 29-item Structured Interview Guide for the Hamilton Depression Rating Scale, Seasonal Affective Disorder version was administered. Standard ERG parameters were derived from the photopic and scotopic luminance response functions. Salivary melatonin concentration during ERG was assessed in both groups but during fall/winter assessments only.

Results:

• A significantly lower cone ERG maximal amplitude and lower rod sensitivity was found in SAD patients before light therapy compared with healthy participants.

• Following 4 weeks of light therapy, a normalization of cone and rod ERG function occurred.

• ERG parameters in the summer and melatonin concentrations in fall/winter were not significantly different between groups.

Conclusions:

Depressed patients with SAD demonstrate ERG changes in the winter compared with healthy comparison subjects, with lower rod retinal sensitivity and lower cone maximal amplitude.

These changes normalized following 4 weeks of light therapy and during the summer, suggesting that ERG changes are state markers for SAD.

Source: Biological Psychiatry, Jan 7, 2009. PMID: 19135188, by Lavoie MP, Lam RW, Bouchard G, Sasseville A, Charron MC, Gagné AM, Tremblay P, Filteau MJ, Hébert M. Centre de recherche Université Laval Robert-Giffard, Centre hospitalier de l'Université Laval, Quebec, Canada. [E-mail: marc.hebert@crulrg.ulaval.ca]





Post a Comment

Featured Products From the ProHealth Store
Energy NADH™ 12.5mg Ultra ATP+, Double Strength Vitamin D3 Extreme™

Looking for Vitamins, Herbs and Supplements?
Search the ProHealth Store for Hundreds of Natural Health Products


Article Comments



Be the first to comment on this article!

Post a Comment


 
NAD+ Ignite with Niagen

Featured Products

FibroSleep™ FibroSleep™
The All-in-One Natural Sleep Aid
Ultra ATP+, Double Strength Ultra ATP+, Double Strength
Get energized with malic acid & magnesium
Mitochondria Ignite™ with NT Factor® Mitochondria Ignite™ with NT Factor®
Reduce Fatigue up to 45%
Ultra EPA  - Fish Oil Ultra EPA - Fish Oil
Ultra concentrated source of essential fish oils
Energy NADH™ 12.5mg Energy NADH™ 12.5mg
Improve Energy & Cognitive Function

Natural Remedies

Can Autoimmune Conditions be Reversed? Researchers Make a Surprising Discovery Can Autoimmune Conditions be Reversed? Researchers Make a Surprising Discovery
Magnesium + Malic Acid: One-Two Punch for Pain & Fatigue Magnesium + Malic Acid: One-Two Punch for Pain & Fatigue
When a Good Night's Sleep Is Just a Daydream... When a Good Night's Sleep Is Just a Daydream...
Stop Bacteria With Nature's Antibiotics Stop Bacteria With Nature's Antibiotics
Priming Your Immune System for Cold & Flu Season Priming Your Immune System for Cold & Flu Season

CONTACT US
ProHealth, Inc.
555 Maple Ave
Carpinteria, CA 93013
(800) 366-6056  |  Email

· Become a Wholesaler
· Vendor Inquiries
· Affiliate Program
SHOP WITH CONFIDENCE
Credit Card Processing
SUBSCRIBE TO OUR NEWSLETTERS
Get the latest news about Fibromyalgia, M.E/Chronic Fatigue Syndrome, Lyme Disease and Natural Wellness

CONNECT WITH US ProHealth on Facebook  ProHealth on Twitter  ProHealth on Pinterest  ProHealth on Google Plus

© 2017 ProHealth, Inc. All rights reserved. Pain Tracker App  |  Store  |  Customer Service  |  Guarantee  |  Privacy  |  Contact Us  |  Library  |  RSS  |  Site Map