Featured Research

from universities, journals, and other organizations

Fast Food Can Speed Up Clogging Of The Arteries

Date:
June 17, 1998
Source:
American Heart Association
Summary:
Eating a "Western" diet with lots of processed or fried foods can raise blood levels of "oxidized" cholesterol -- a particularly damaging form of cholesterol -- and could increase heart attack risk, scientists say.

DALLAS, June 12 -- Eating a "Western" diet with lots of processed or fried foods can raise blood levels of "oxidized" cholesterol -- a particularly damaging form of cholesterol -- and could increase heart attack risk, scientists say.

Researchers report in this month's Arteriosclerosis, Thrombosis and Vascular Biology: Journal of the American Heart Association about a study with rabbits that demonstrates blood levels of oxidized cholesterol match up with the quantity of oxidized cholesterol in the diet. The researchers found that in rabbits, the dietary oxidized cholesterol accelerated the process of atherosclerosis, or clogging of the blood vessels.

It is thought that blood vessels can oxidize cholesterol, leading to a collection of fat called plaque. But the new study finds that foods in the "Western" diet containing oxidized cholesterol -- cooked, fried or processed foods, meats, eggs and dairy products chief among them -- add to the overall oxidant load and can speed atherosclerosis.

"With the popularity of fried foods and the widespread fast-food industry, oxidized fats are common in the Western diet and could contribute to heart disease," says Ilona Staprans, Ph.D., of the Lipid Research Laboratory at the VA Medical Center in San Francisco.

Low-density lipoprotein (LDL) cholesterol is the "bad" form of cholesterol, but when it is oxidized, it can become even more dangerous. Oxidation occurs when cholesterol comes in contact with "free radicals," which are highly unstable, reactive oxygen molecules that circulate in the blood and damage tissues. Oxidized LDL cholesterol -- fat particles that have been combined with reactive oxygen -- plays a major role in the formation of artery-blocking plaque.

"Dietary oxidized cholesterol may contribute to atherogenesis, and dietary modification that reduces the intake of dietary oxidized cholesterol may have a role in the prevention and treatment of atherosclerosis," says Staprans.

The scientists examined two sets of rabbits with similar genetic makeup. One set was fed a higher amount of oxidized cholesterol. In studying the rabbits 12 weeks later, scientists found that small quantities of oxidized cholesterol (25 milligrams per day) increased atherosclerotic lesions by 100 percent in comparison to those rabbits not fed the extra oxidized cholesterol.

Co-authors include Xian-Mang Pan, Joseph H. Rapp and Kenneth R. Feingold.


Story Source:

The above story is based on materials provided by American Heart Association. Note: Materials may be edited for content and length.


Cite This Page:

American Heart Association. "Fast Food Can Speed Up Clogging Of The Arteries." ScienceDaily. ScienceDaily, 17 June 1998. <www.sciencedaily.com/releases/1998/06/980617070522.htm>.
American Heart Association. (1998, June 17). Fast Food Can Speed Up Clogging Of The Arteries. ScienceDaily. Retrieved July 24, 2014 from www.sciencedaily.com/releases/1998/06/980617070522.htm
American Heart Association. "Fast Food Can Speed Up Clogging Of The Arteries." ScienceDaily. www.sciencedaily.com/releases/1998/06/980617070522.htm (accessed July 24, 2014).

Share This




More Health & Medicine News

Thursday, July 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Idaho Boy Helps Brother With Disabilities Complete Triathlon

Idaho Boy Helps Brother With Disabilities Complete Triathlon

Newsy (July 23, 2014) An 8-year-old boy helped his younger brother, who has a rare genetic condition that's confined him to a wheelchair, finish a triathlon. Video provided by Newsy
Powered by NewsLook.com
Thousands Who Can't Afford Medical Care Flock to Free US Clinic

Thousands Who Can't Afford Medical Care Flock to Free US Clinic

AFP (July 23, 2014) America may be the world’s richest country, but in terms of healthcare, the World Health Organisation ranks it 37th. Thousands turned out for a free clinic run by "Remote Area Medical" with a visit from the Governor of Virginia. Duration: 2:40 Video provided by AFP
Powered by NewsLook.com
Stone Fruit Listeria Scare Causes Sweeping Recall

Stone Fruit Listeria Scare Causes Sweeping Recall

Newsy (July 22, 2014) The Wawona Packing Company has issued a voluntary recall on the stone fruit it distributes due to a possible Listeria outbreak. Video provided by Newsy
Powered by NewsLook.com
Huge Schizophrenia Study Finds Dozens Of New Genetic Causes

Huge Schizophrenia Study Finds Dozens Of New Genetic Causes

Newsy (July 22, 2014) The 83 new genetic markers could open dozens of new avenues for schizophrenia treatment research. 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:
from the past week

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