Obese people take less time to feel full than those of normal weight. Despite this, they consume more calories. A faster speed of eating could play an important role in obesity, according to a study funded by the Swiss National Science Foundation.
The number of people in the world who are obese has doubled since 1980. Attempts to halt the progress of this pandemic are reliant on more accurate knowledge of how obesity occurs.
This is what a research group led by Christoph Beglinger at the University Hospital in Basel aimed to find out by comparing feelings of satiation among people of normal weight and those who are obese. In their study (*), the researchers conclude that obese people eat faster. The obese take less time to feel full than people of normal weight, and although they spend less time eating, they consume more calories.
Time to satiation
Christoph Beglinger and his team asked twenty people of normal weight and twenty people who were obese to consume a nutritional drink in the morning, on an empty stomach. The test subjects were allowed to drink as much as they wanted, and as quickly as they wanted. Every three minutes they were required to indicate how full they felt.
On average, the obese people reported feeling full after just ten minutes, four minutes earlier than those of normal weight. However, during this ten minute period they consumed on average approximately 85 kcal per minute, compared with around 50 kcal per minute consumed by the test subjects of normal weight. Therefore, despite the shorter period of consumption, obese people consumed around 140 kcal more before they felt full.
“Eating even just 100 kcal a day more than the recommended amount can cause weight gain,” write the researchers in their study. “For this reason, the speed of eating is a potential contributing factor in obesity.” Although making changes to people’s eating habits is difficult, the new results indicate that treatments focussing on such approaches are correct. “Eating slowly is not only healthy, but it should also help you lose weight,” explains Beglinger.
(*) Anne C. Meyer-Gerspach, Bettina Wölnerhanssen, Bettina Beglinger, Falk Nessenius, Marylin Napitupulu, Felix H. Schulte, Robert E. Steinert and Christoph Beglinger (2014). Gastric and intestinal satiation in obese and normal weight healthy people. Physiology & Behavior online. doi: 10.1016/j.physbeh.2014.02.043
(Available to journalists as a PDF file from the SNSF at the following e-mail address: email@example.com)
Prof Christoph Beglinger
Department of Biomedicine
University Hospital Basel
CH - 4031 Basel
Phone: +41 61 328 61 75
Media - Abteilung Kommunikation | idw - Informationsdienst Wissenschaft
New study: How stable is the West Antarctic Ice Sheet?
09.02.2016 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung
Online shopping might not be as green as we thought
08.02.2016 | University of Delaware
Today, plants and microorganisms are heavily used for the production of medicinal products. The production of biopharmaceuticals in plants, also referred to as “Molecular Pharming”, represents a continuously growing field of plant biotechnology. Preferred host organisms include yeast and crop plants, such as maize and potato – plants with high demands. With the help of a special algal strain, the research team of Prof. Ralph Bock at the Max Planck Institute of Molecular Plant Physiology in Potsdam strives to develop a more efficient and resource-saving system for the production of medicines and vaccines. They tested its practicality by synthesizing a component of a potential AIDS vaccine.
The use of plants and microorganisms to produce pharmaceuticals is nothing new. In 1982, bacteria were genetically modified to produce human insulin, a drug...
Atomic clock experts from the Physikalisch-Technische Bundesanstalt (PTB) are the first research group in the world to have built an optical single-ion clock which attains an accuracy which had only been predicted theoretically so far. Their optical ytterbium clock achieved a relative systematic measurement uncertainty of 3 E-18. The results have been published in the current issue of the scientific journal "Physical Review Letters".
Atomic clock experts from the Physikalisch-Technische Bundesanstalt (PTB) are the first research group in the world to have built an optical single-ion clock...
The University of Würzburg has two new space projects in the pipeline which are concerned with the observation of planets and autonomous fault correction aboard satellites. The German Federal Ministry of Economic Affairs and Energy funds the projects with around 1.6 million euros.
Detecting tornadoes that sweep across Mars. Discovering meteors that fall to Earth. Investigating strange lightning that flashes from Earth's atmosphere into...
Physicists from Saarland University and the ESPCI in Paris have shown how liquids on solid surfaces can be made to slide over the surface a bit like a bobsleigh on ice. The key is to apply a coating at the boundary between the liquid and the surface that induces the liquid to slip. This results in an increase in the average flow velocity of the liquid and its throughput. This was demonstrated by studying the behaviour of droplets on surfaces with different coatings as they evolved into the equilibrium state. The results could prove useful in optimizing industrial processes, such as the extrusion of plastics.
The study has been published in the respected academic journal PNAS (Proceedings of the National Academy of Sciences of the United States of America).
Exceeding critical temperature limits in the Southern Ocean may cause the collapse of ice sheets and a sharp rise in sea levels
A future warming of the Southern Ocean caused by rising greenhouse gas concentrations in the atmosphere may severely disrupt the stability of the West...
12.02.2016 | Event News
09.02.2016 | Event News
02.02.2016 | Event News
12.02.2016 | Physics and Astronomy
12.02.2016 | Life Sciences
12.02.2016 | Medical Engineering