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

Fish is Not Always 'Brain Food'

  [ 189 votes ]   [ Discuss This Article ]
www.ProHealth.com • July 7, 2003


Eating methylmercury contaminated fish causes problems in adults
Warnings about methylmercury contaminated fish are not just for young children and expectant mothers, according to new research published today in Environmental Health: A Global Access Science Source. Adults who regularly eat contaminated fish could find that their concentration, dexterity and verbal memory are impaired.

The major source of methylmercury is diet, particularly large fish like shark and swordfish. The authors of this new research concluded: "methylmercury exposure at levels often encountered by adults in North America may be inducing adverse effects on neurobehavioral performance."

Methylmercury damages or destroys nerve tissue. It affects the visual cortex and the cerebellum, the part of the brain responsible for controlling complex movements and maintaining balance. This new research challenges the assumption that adults are much less sensitive to its toxic effects than children.

Ellen Silbergeld, of John Hopkins University, and her colleagues conducted the first major study on the effects of long-term exposure to small amounts of methylmercury in adults using sensitive neuropsychological tests.

The team, which included researchers from The University of Rio de Janeiro and the University of Maryland, studied a group of 129 men and women living in fishing communities of the Pantanal region of Brazil. They took samples of recent hair growth and analyzed them for mercury. Because hair grows constantly, these values reflect the exposure of individuals to methylmercury within the previous three months. About one out of four of the participants were found to have mercury levels that exceeded the 'safe' level set by the World Health Organization (WHO) for women and children. WHO will decide next week whether the current exposure limit should be decreased.

The researchers also used a number of tests to assess mental functions such as learning, attention, memory, accuracy, manual speed and dexterity. Those individuals with higher levels of mercury in their hair fared worse on the tests for motor skills, memory and concentration.

Mercury is used in small-scale gold-mining. A gold-rush began in the Patanal region of Brazil in the early 1980's, leading to an increased concentration of mercury in the environment in the mid-1980's. Once mercury gets into the water system, it is converted to methylmercury by bacteria found in sediment. Fish ingest it as they feed, and the concentration increases up the food chain. Larger fish species with long life-spans will contain much higher levels of methylmercury.

Methyl mercury levels are a global concern, with the major source of exposure being fish consumption. Women who have eaten grossly contaminated fish may give birth to children with severe disabilities including cerebral palsy and mental retardation. The United States Food and Drug Administration issued an advisory in 2001, warning women who were pregnant or of child-bearing age to restrict their intake of shark, swordfish, king mackerel and tilefish. Governmental advisories in the United Kingdom and other countries also warn that the diet of children should not include contaminated fish species.

This study suggests that this advice should now be extended to everyone, although the effects seen in adults are less severe than in children exposed to methylmercury before birth.

###

This article will be freely available on publication in the open access, peer reviewed Environmental Health: A Global Access Science Source (http://www.ehjournal.net/) at http://www.ehjournal.net/content/2/1/8

Full journal reference:

Low level methylmercury exposure affects neuropsychological function in adults. Edna M. Yokoo, Joaquim G. Valente, Lynn Grattan, Sérgio Luís Schmidt, Illeane Platt, Ellen K Silbergeld. Environmental Health: A Global Access Science Source 2003, 2:8 (4 June 2003)

For more information on this research, please contact one of the authors:

Ellen K Silbergeld

Department of Environmental Health Sciences

Johns Hopkins University

Bloomberg School of Public Health

Baltimore MD 21205 USA

esilberg@jhsph.edu

About Environmental Health: A Global Access Science Source:
Environmental Health: A Global Access Science Source is an open access, online journal which publishes papers on all aspects of environmental and occupational medicine and related studies in toxicology and epidemiology. Environmental Health: A Global Access Science Source is published by BioMed Central.

About BioMed Central:

BioMed Central (http://www.biomedcentral.com) is an independent online publishing house committed to providing immediate free access to the peer-reviewed biological and medical research it publishes. This commitment is based on the view that open access to research is essential to the rapid and efficient communication of science. In addition to open-access original research, BioMed Central also publishes reviews and other subscription-based content.

Source: BioMed Central.



Post a Comment

Featured Products From the ProHealth Store
Ultra EPA  - Fish Oil Optimized Curcumin Longvida® Ultra ATP+, Double Strength

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

Mitochondria Ignite™ with NT Factor® Mitochondria Ignite™ with NT Factor®
Reduce Fatigue up to 45%
Ultra ATP+, Double Strength Ultra ATP+, Double Strength
Get energized with malic acid & magnesium
Optimized Curcumin Longvida® Optimized Curcumin Longvida®
Supports Cognition, Memory & Overall Health
FibroSleep™ FibroSleep™
The All-in-One Natural Sleep Aid
Energy NADH™ 12.5mg Energy NADH™ 12.5mg
Improve Energy & Cognitive Function

Natural Remedies

How One Tiny Molecule Turned into One Huge Health Breakthrough How One Tiny Molecule Turned into One Huge Health Breakthrough
A Hard-Working Molecule that May Help Ease Pain & Brighten Mood A Hard-Working Molecule that May Help Ease Pain & Brighten Mood
Aches and Pains? A Simple Solution You'll Love Aches and Pains? A Simple Solution You'll Love
The Crucial Role CoQ10 Plays in Fibromyalgia and ME/CFS The Crucial Role CoQ10 Plays in Fibromyalgia and ME/CFS
Natural Support for Mood, Sleep and Mental Focus? L-theanine Natural Support for Mood, Sleep and Mental Focus? L-theanine

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