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

Is Magnesium the Missing Link in Your Heart Healthy Routine?

More evidence for calorie restriction’s longevity effect

A Little Zinc Goes a Long Way

Supplementation with vitamin D associated with improved testosterone, erectile function among middle...

Vitamin D deficiency increases risk of chronic headache

VIDEO: The Best Brain Foods That Help Increase Your Memory!

Get the Most From Your Green Tea

Iron (And More) For Lasting, Natural Energy

Metabolic syndrome increases the need for vitamin E

Supplement combo improves bone density, mood, in postmenopausal women

 
Print Page
Email Article

Certain Genes Boost Fish Oils' Protection Against Breast Cancer

  [ 73 votes ]   [ Discuss This Article ]
www.ProHealth.com • September 27, 2004


Source: University of Southern California USC study hints at new targets for killing cancer cells LOS ANGELES (Sept. 21, 2004) - Researchers who found that fish oils appear to reduce breast cancer risk have now discovered that the oils may especially benefit women with particular genetic makeups. The protective effects of fish oils, called marine n-3 or omega-3 fatty acids, are linked to the cancer-fighting properties of the oil's byproducts, propose investigators from the Keck School of Medicine of the University of Southern California and the National University of Singapore. The study in Carcinogenesis was published early online through the journal's Web site. Moreover, researchers believe that women whose bodies do a poor job of getting rid of the fish oils' byproducts are the ones who benefit most from consuming the oils. That may help scientists better understand exactly how fish oils deter cancer. "In this study, we found that women with certain common DNA patterns experienced more breast cancer protection from marine n-3 fatty acids than women with other common patterns," explained Manuela Gago-Dominguez, M.D., Ph.D., assistant professor of preventive medicine at the Keck School of Medicine of USC and the study's lead author. Findings came from the Singapore Chinese Health Study, a prospective investigation of diet and cancer risk in more than 63,000 Chinese men and women in Singapore. "Through this study, we have identified a novel gene-environmental interaction between certain genotypes and omega-3 fatty acids on breast cancer development," says Mimi C. Yu, Ph.D., professor of preventive medicine at the Keck School and principal investigator of the Singapore Chinese Health Study. The researchers had already found that among postmenopausal women in this group, those who ate the most n-3 fatty acids (from fish such as salmon and mackerel) were 34 percent less likely to be diagnosed with breast cancer than women who ate the least n-3 fatty acids from fish. They suspected that lipid peroxidation products - that is, substances produced when the fatty acids break down - were behind the protection. Gago-Dominguez explains that certain enzymes in the body known as glutathione S-transferases (GSTs, for short) help the body flush out and get rid of these lipid peroxidation products. Each person has certain genes that carry the recipe for making GST. But interestingly, these genes can be found in slightly different varieties - called polymorphisms - in the population. The differences between the genes can mean the difference between GST that clears substances efficiently out of the body and GST that works a little slower. The researchers looked at the genetic makeup of study participants and grouped them according to which polymorphisms they had. They found that postmenopausal women who had low-activity versions of genes associated with GSTs (known as GSTM1, GSTT1 and GSTP1) had a lower risk of breast cancer. Women with a combination of the lowest-activity forms of GSTM1 and GSTP1 had 64 percent lower risk of the cancer, and women with a combination of the lowest-activity forms of GSTT1 and GSTP1 had a 74 percent lower risk of the cancer. Among women with high-activity versions of GST-related genes, though, they saw no evidence that fish oils reduced breast cancer risk. That held true for both pre- and postmenopausal women. Interestingly, laboratory studies have shown that cancer growth is suppressed by n-3 fatty acid byproducts, and the suppression is enhanced by drugs that increase lipid peroxidation. When antioxidants are introduced to battle the effects of peroxidation, though, the cancer continues to grow. "Our findings may have practical implications in treatment and prevention strategies for breast cancer," says Gago-Dominguez. "Marine n-3 fatty acids have been shown to enhance the cancer-killing effect of certain chemotherapy drugs and radiotherapy in experimental studies. Since these anti-cancer agents may act, at least in part, through similar oxidative mechanisms as n-3 fatty acids - which is why patients under chemotherapy are advised not to take antioxidant vitamin supplements - understanding the anti-cancer effect of marine n-3 fatty acids may be important to finding the mechanisms for killing cancer cells." Study Reference: Manuela Gago-Dominguez, J. Esteban Castelao, Can-Lan Sun, David Van Den Berg, Woon-Puay Koh, Hin-Peng Lee, and Mimi C. Yu, "Marine n-3 fatty acid intake, glutathione S-transferase polymorphisms and breast cancer risk in postmenopausal Chinese women in Singapore. Carcinogenesis, published early online; doi:10.1093/carcin/bgh230.



Post a Comment

Featured Products From the ProHealth Store
Vitamin D3 Extreme™ Ultra EPA  - Fish Oil 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%
Optimized Curcumin Longvida® Optimized Curcumin Longvida®
Supports Cognition, Memory & Overall Health
Ultra ATP+, Double Strength Ultra ATP+, Double Strength
Get energized with malic acid & magnesium
Energy NADH™ 12.5mg Energy NADH™ 12.5mg
Improve Energy & Cognitive Function
FibroSleep™ FibroSleep™
The All-in-One Natural Sleep Aid

Natural Remedies

Three-Step Strategy to Reverse Mitochondrial Aging Three-Step Strategy to Reverse Mitochondrial Aging
Breakthrough Form of Magnesium Enhances Memory and Cognitive Function Breakthrough Form of Magnesium Enhances Memory and Cognitive Function
Quercetin: Natural Support for Allergy & Inflammation Relief and More Quercetin: Natural Support for Allergy & Inflammation Relief and More
Fight Inflammation and Promote Cognitive Health with High-OPC Grape Seed Fight Inflammation and Promote Cognitive Health with High-OPC Grape Seed
Relief for Dry, Itchy Skin Caused by Fibromyalgia Relief for Dry, Itchy Skin Caused by Fibromyalgia

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