Study casts doubts on antioxidants
Source: Agencies |
October 8, 2009, Thursday
|
Print Edition
Print Edition
INSTEAD of protecting against diabetes, antioxidants -- compounds in foods and supplements that prevent cell damage -- may actually raise the chances of getting diabetes, at least in the early stages, Australian researchers said.
"In the case of early type 2 diabetes ... our studies suggest that antioxidants would be bad for you," Tony Tiganis of Monash University in Australia, whose study appears in the journal Cell Metabolism, said in a statement on Tuesday.
Antioxidants are protective proteins that can prevent cell damage caused by charged particles known as reactive oxygen species. This oxidative stress is thought to add to the progression of several diseases, including type 2 diabetes. Because antioxidants fight oxidative stress, they have become a popular food supplement.
Tiganis' team studied the effects of oxidative stress in mice fed a high-fat diet for 12 weeks. One group of mice lacked the Gpxl enzyme, which helps counter oxidative stress. They found mice that lacked the enzyme were less likely to develop insulin resistance -- an early sign of diabetes -- than normal mice. But when they treated the enzyme-deficient mice with an antioxidant, "they lost this advantage and become more 'diabetic,'" Tiganis said.
"In the case of early type 2 diabetes ... our studies suggest that antioxidants would be bad for you," Tony Tiganis of Monash University in Australia, whose study appears in the journal Cell Metabolism, said in a statement on Tuesday.
Antioxidants are protective proteins that can prevent cell damage caused by charged particles known as reactive oxygen species. This oxidative stress is thought to add to the progression of several diseases, including type 2 diabetes. Because antioxidants fight oxidative stress, they have become a popular food supplement.
Tiganis' team studied the effects of oxidative stress in mice fed a high-fat diet for 12 weeks. One group of mice lacked the Gpxl enzyme, which helps counter oxidative stress. They found mice that lacked the enzyme were less likely to develop insulin resistance -- an early sign of diabetes -- than normal mice. But when they treated the enzyme-deficient mice with an antioxidant, "they lost this advantage and become more 'diabetic,'" Tiganis said.
- About Us
- |
- Terms of Use
- |
-
RSS - |
- Privacy Policy
- |
- Contact Us
- |
- Shanghai Call Center: 962288
- |
- Tip-off hotline: 52920043
- 沪ICP证：沪ICP备05050403号-1
- |
- 互联网新闻信息服务许可证：31120180004
- |
- 网络视听许可证：0909346
- |
- 广播电视节目制作许可证：沪字第354号
- |
- 增值电信业务经营许可证：沪B2-20120012
Copyright © 1999- Shanghai Daily. All rights reserved.Preferably viewed with Internet Explorer 8 or newer browsers.
