We all know that Pubescent boys to take when they nibble the pound cake Pan. And many Elderly have to “eat watch” to be on the increase.
The “prosperity belly” 50 Plus is so inevitable? What sounds depending on your perspective, as a truism, or protection claim that is now scientifically proven: Older people can actually to the body weight, if you take the same amounts of food as in his younger years to.
The reason is that In the age of the fat, weakens metabolism and stored fat will be worse reduced. The report researchers from Sweden in the journal “Nature Medicine”.
Fat is stored in the body in fat cells called adipocytes. They make up about 90 percent of the white adipose tissue. Continue to is reduced in the cells of stored fat and new placed in storage. In order to examine how these metabolic changes in the course of life, investigated by the Team led by Peter Arner from the Karolinska University Hospital in Stockholm (Sweden) is 54 persons. Of these they had taken twice in the course of, an average of 13 years, a sample of adipose tissue.
The scientists studied the age of the triglycerides in the samples are fat molecules that are stored in the adipocytes.
Notice that in elderly subjects with a simple Trick: Normally, the percentage ratio of the carbon isotopes C14 and C12 corresponds to all cells of living beings in the concentration of this Isotope in the atmosphere live.
At the time of the above-ground nuclear weapons tests during the Cold war, but doubled between 1953 and 1970, the concentration of C14 in the atmosphere, after the setting of above-ground Tests in the 1980 fall significantly. Therefore, from the comparison of the percentage ratio of C14 and C12 isotopes in a fat cell, whose age derive, in old cells, the percentage of C14 is isotopes higher.
The study showed that slower degradation with increasing age of the fat – and regardless of whether the Person had increased, her weight held or over the years has decreased: the older the subjects were, the slower the fat cells metabolism was. And, apparently, acts directly on the development of the body weight back: subjects who had reduced their caloric intake over the study period, rose about 20 percent of body weight.
How big is the influence of lipid metabolism on the development of the body weight, the researchers tried to capture by using a second group of test Subjects. The scientists had also examined in 41 severely obese people, the stomach had to shrink. Here, too, the doctors found a significant influence of the rate of grease removal on the development of the body weight. A high fat metabolic rate correlated with a more significant weight loss than a lower fat rate of metabolism. This may indicate that the role of lipid metabolism has been underestimated in the regulation of body weight in the past.
“The results suggest for the first time, that there are processes in our fat tissue, which affect independently of other factors, the weight of the body in old age. This opens up new possibilities for the treatment of Obesity might result,” says study leader Peter Arner.
German researchers refer to it in the first reactions, however, that the issue of Adiposis should not be on single factors, broken down. Helmut glad hofen, Department of doctor of age medicine at Alfried Krupp hospital in Essen, holds the study for too small to draw reliable conclusions from it: “the results of The study are a more interesting note, but it is quite a few subjects.”
Basically, you could lead to Obesity always easy to biology: “There are many factors that play a role, which is partly genetically, partly behavior-dependent. If in the age of sporting activities are restricted, the weight best the diet to influence”, so glad hofen.
In the case of really old people, Obesity is not eventually the most urgent Problem, says Helmut Wallrafen of the German society for gerontology and geriatrics: “When people in old age increase some weight, it is rather a subjectively perceived, aesthetic Problem than a medical one. As a practitioner, and nurse, the topic of Obesity has come to me only very selectively, and we typically have more of the challenge that people in old age suffer from malnutrition.”