Featured Research

from universities, journals, and other organizations

Whole Grain Foods Might Reduce Diabetes Risk, But Evidence Weak

Date:
January 28, 2008
Source:
Center For The Advancement Of Health
Summary:
Many have touted whole grain foods as a way to prevent type 2 diabetes, and a new review finds a reduction in risk for people who consume a diet high in unrefined grains. However, the authors caution that more research is necessary before scientists can confirm a causal relationship.

Many have touted whole grain foods as a way to prevent type 2 diabetes, and a new review finds a reduction in risk for people who consume a diet high in unrefined grains. However, the authors caution that more research is necessary before scientists can confirm a causal relationship.

Related Articles


“At the moment, because there is only weak evidence, no definite conclusion can be drawn concerning the protective effect of whole grain foods for the development of type 2 diabetes,” said lead review author Marion Priebe.

Refined cereal food products remove the nutrient- and fiber-rich bran and germ of the grain, leaving only the starchy inner parts. A decrease in consumption of whole grain cereals over the last decade, occurring at the same time as an increase in type 2 diabetes, has lead to the theory that there is a connection between the two.

Priebe, a nutritionist and epidemiologist at the Center for Medical Biomics, University Medical Center Groningen in the Netherlands, and colleagues reviewed 12 studies that examined relationships between whole grain intake and type 2 diabetes. These studies consisted of a single randomized controlled clinical trial and 11 prospective studies.

The review appears in the latest issue of The Cochrane Library, a publication of The Cochrane Collaboration, an international organization that evaluates medical research. Systematic reviews draw evidence-based conclusions about medical practice after considering both the content and quality of existing medical trials on a topic.

In the prospective studies, researchers followed groups of people without diabetes over long periods to see whether those who consumed more whole grain foods were less likely to get the disease than other participants were. These studies consistently showed a reduction of risk for the disease in those with a high intake of whole grain foods or cereal fiber.

Two of the studies that looked at the effect of whole grain consumption on weight, an important diabetes risk factor, found only a slight improvement.

Scientists consider evidence from prospective studies to be weaker than that from randomized controlled trials. Other factors, like an overall healthy lifestyle, can also influence the development of type 2 diabetes and it is not possible to completely correct for known and possibly unknown factors in this study design.

In randomized controlled trials, which are more difficult to perform, researchers can exclude — or control for — other influences on the development of the disease.

Priebe said she was surprised that only one randomized trial on this topic exists: “As type 2 diabetes mellitus is reaching epidemic proportions and diet is considered as a modifiable risk factor, it is important to have a sound knowledge of which kinds of food can contribute to the prevention of this disease and to identify gaps in this knowledge.”

Osama Hamdy, M.D., medical director of the Clinical Obesity Program at the Joslin Diabetes Center in Boston, said the kinds of data used within the review are troubling. He said that studies about diabetes prevention should be randomized controlled trials over long durations. Although the concept of a whole–grains-rich diet as a possible diabetes preventative is interesting, he said, none of the review studies would enable any kind of cause-and-effect conclusion.

“This is an additional piece of information that tells us diets rich in whole grains will probably do some good in the prevention of type 2 diabetes,” Hamdy said. “It is not a shortcut to tell you exactly what you need. It is just more support of a concept that has been around for a long time.”

“Whole grain foods are rich in dietary fiber and nutrients and they are recommended to be consumed together with plenty of fruit and vegetables for a healthy diet,” Priebe said. The findings of this review are in line with those recommendations.”

Reference: Priebe MG, et al. Whole grain foods for the prevention of type 2 diabetes. The Cochrane Database of Systematic Reviews 2008, Issue 1.


Story Source:

The above story is based on materials provided by Center For The Advancement Of Health. Note: Materials may be edited for content and length.


Cite This Page:

Center For The Advancement Of Health. "Whole Grain Foods Might Reduce Diabetes Risk, But Evidence Weak." ScienceDaily. ScienceDaily, 28 January 2008. <www.sciencedaily.com/releases/2008/01/080124203630.htm>.
Center For The Advancement Of Health. (2008, January 28). Whole Grain Foods Might Reduce Diabetes Risk, But Evidence Weak. ScienceDaily. Retrieved November 26, 2014 from www.sciencedaily.com/releases/2008/01/080124203630.htm
Center For The Advancement Of Health. "Whole Grain Foods Might Reduce Diabetes Risk, But Evidence Weak." ScienceDaily. www.sciencedaily.com/releases/2008/01/080124203630.htm (accessed November 26, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Wednesday, November 26, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

Newsy (Nov. 25, 2014) — The US FDA is announcing new calorie rules on Tuesday that will require everywhere from theaters to vending machines to include calorie counts. Video provided by Newsy
Powered by NewsLook.com
Daily Serving Of Yogurt Could Reduce Risk Of Type 2 Diabetes

Daily Serving Of Yogurt Could Reduce Risk Of Type 2 Diabetes

Newsy (Nov. 25, 2014) — Need another reason to eat yogurt every day? Researchers now say it could reduce a person's risk of developing type 2 diabetes. Video provided by Newsy
Powered by NewsLook.com
Madagascar Working to Contain Plague Outbreak

Madagascar Working to Contain Plague Outbreak

AFP (Nov. 24, 2014) — Madagascar said Monday it is trying to contain an outbreak of plague -- similar to the Black Death that swept Medieval Europe -- that has killed 40 people and is spreading to the capital Antananarivo. Duration: 00:42 Video provided by AFP
Powered by NewsLook.com
Are Female Bosses More Likely To Be Depressed?

Are Female Bosses More Likely To Be Depressed?

Newsy (Nov. 24, 2014) — A new study links greater authority with increased depressive symptoms among women in the workplace. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins