Featured Research

from universities, journals, and other organizations

Mashed Potatoes Prepared With Heart Healthy Oil Beats Rice For Appetite Control

Date:
April 19, 2000
Source:
Penn State
Summary:
In a recent study, young men who ate a lunch including mashed potatoes prepared with heart healthy mono unsaturated oil stayed satiated longer than when they ate the same lunch with either rice or mashed potatoes prepared with polyunsaturated oil.

San Diego, Calif. -- In a recent study, young men who ate a lunch including mashed potatoes prepared with heart healthy mono unsaturated oil stayed satiated longer than when they ate the same lunch with either rice or mashed potatoes prepared with polyunsaturated oil.

"Rice prepared with polyunsaturated oil was the least effective in delaying the return to hunger over an eight-hour test period," says Dr. S. E. Specter, Penn State assistant professor of nutrition and first author of the international research team’s report.

"Speaking practically, these preliminary data suggest that the type of oil you cook with may affect satiety," he adds. "Our study indicates that mono unsaturated oils, which other researchers have shown can help lower cardiovascular disease risk, could also be important in helping control appetite."

The study was conducted in Paris, France, at the Hτtel Dieu hospital when Specter held a postdoctoral appointment there before joining the Penn State faculty. No other controlled studies have simultaneously varied the type of dietary fat and carbohydrate in normal, balanced meals to examine the time-course of the return of hunger.

Specter presented the findings for the first time in a poster, today (April 16) at the Experimental Biology 2000 conference in San Diego, Calif. His co-authors include Dr. Bernard Guy Grand, head of the departments of nutrition and internal medicine at Hτtel Dieu, J-L. Joannic, S. Auboiron, J. Raison, M. Champs, A. Basdevant, and F.R.J. Bornet.

Twelve healthy, normal-weight men, about 24 years of age, took part in the study. On one day a week for each of four weeks, they ate breakfast and lunch at the hospital. For lunch they were served chopped steak, French bread, a side dish of either mashed potatoes or rice, a piece of cheese and an apple. The mashed potatoes and rice were prepared with either a high mono unsaturated oil mixture (60 percent sunflower and 40 percent soybean), or a high polyunsaturated oil mixture (70 percent sunflower and 30 percent rapeseed).

Specter says that during the first four hours after the lunch, the men reported being hungrier if they had eaten rice no matter what kind of oil had been used in its preparation. He notes that this effect may be related to rice’s glycemic index, a measure of the magnitude and duration of its effect on blood sugar levels. Rice has a lower glycemic index than potatoes.

During the second four-hour period after lunch, the effect of the oils became apparent. When the men’s meal contained either mashed potatoes or rice prepared with mono unsaturated oil, they were less hungry four to eight hours after eating than when fed the same starches prepared with polyunsaturated oil. The effect was most pronounced, however, when the men ate the mashed potatoes prepared with the mono unsaturated oil suggesting that the two foods are working together.

The Penn State researcher says that these results support the idea that the type of fat a person eats could make a difference in how hungry they feel later in the day. "A person who eats foods high in mono versus poly unsaturated fats at lunchtime might conceivably eat fewer calories, for example, in snacks, at the end of the afternoon, " he adds.

From an appetite control standpoint, the data suggest that all calories from fat may not be the same and all calories from starch may not be the same. "In addition to the increasing evidence of their role in lowering risk factors for certain chronic diseases, mono unsaturated oils may influence subsequent hunger, suggesting a potential benefit in weight control when incorporated into everyday or therapeutic diets," Specter says.

However, the College of Health and Human Development faculty member cautions that the physiological signals that lead to meal termination or inhibit intake until the next meal are complex. He adds, "There is a need for further studies in which researchers look at different types of fats and oils in the context of a meal instead of just fat versus carbohydrates."

The research was supported by a grant from the Nutrition Health Service of Eridania Beghin-Say Corp. of Belgium.


Story Source:

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


Cite This Page:

Penn State. "Mashed Potatoes Prepared With Heart Healthy Oil Beats Rice For Appetite Control." ScienceDaily. ScienceDaily, 19 April 2000. <www.sciencedaily.com/releases/2000/04/000417100050.htm>.
Penn State. (2000, April 19). Mashed Potatoes Prepared With Heart Healthy Oil Beats Rice For Appetite Control. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2000/04/000417100050.htm
Penn State. "Mashed Potatoes Prepared With Heart Healthy Oil Beats Rice For Appetite Control." ScienceDaily. www.sciencedaily.com/releases/2000/04/000417100050.htm (accessed July 31, 2014).

Share This




More Health & Medicine News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

House Republicans Vote to Sue Obama Over Healthcare Law

House Republicans Vote to Sue Obama Over Healthcare Law

Reuters - US Online Video (July 31, 2014) — The Republican-led House of Representatives votes to sue President Obama, accusing him of overstepping his executive authority in making changes to the Affordable Care Act. Mana Rabiee reports. Video provided by Reuters
Powered by NewsLook.com
Despite Health Questions, E-Cigs Are Beneficial: Study

Despite Health Questions, E-Cigs Are Beneficial: Study

Newsy (July 31, 2014) — Citing 81 previous studies, new research out of London suggests the benefits of smoking e-cigarettes instead of regular ones outweighs the risks. Video provided by Newsy
Powered by NewsLook.com
Dangerous Bacteria Kills One in Florida

Dangerous Bacteria Kills One in Florida

AP (July 31, 2014) — Sarasota County, Florida health officials have issued a warning against eating raw oysters and exposing open wounds to coastal and inland waters after a dangerous bacteria killed one person and made another sick. (July 31) Video provided by AP
Powered by NewsLook.com
Health Insurers' Profits Slide

Health Insurers' Profits Slide

Reuters - Business Video Online (July 30, 2014) — Obamacare-related costs were said to be behind the profit plunge at Wellpoint and Humana, but Wellpoint sees the new exchanges boosting its earnings for the full year. Fred Katayama reports. Video provided by Reuters
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