These studies included almost 3 million adults from around the world, yet the results were remarkably consistent, the authors of the analysis noted.
Several factors may account for this finding, Flegal added. For the study, Flegal's team collected data on more than 2.
The researchers looked at the participants' body mass index, or BMI, which is a measurement of body fat that takes into account a person's height and weight. Pooling the data from all the studies, the researchers found that compared with normal weight people, overweight people had a 6 percent lower risk of death. Obese people, however, had an 18 percent higher risk of death.
The Impact Objective: Adiponectin plays an important role in pathophysiology of obesity, type 2 diabetes and cardiovascular disease. The aim of this study was to determine adiponectin concentrations in children and adolescents with type 1 diabetes in a longitudinal manner and to study the impact of age, gender, body mass index BMI and metabolic control. Research design and methods: In this study, 88 children and adolescents with type 1 diabetes were followed longitudinally. At baseline and during follow-up, serum levels of adiponectin were measured by enzyme-linked immunoassay and correlated with clinical data, HbA1c and lipids. Results: Serum adiponectin levels were significantly higher in children with type 1 diabetes compared with healthy children
For those who were the least obese, the risk of death was 5 percent lower than for normal weight people, but for those who were the most obese the risk of death was 29 percent higher, the findings revealed. While the study found an association between weight and premature death risk, it did not prove a cause-and-effect relationship.
Indeed, one expert cautioned that body weight alone cannot predict health and the risk of death. William Cefalu, chief and professor of the section of endocrinology, diabetes and metabolism at Louisiana State University and co-author of an accompanying journal editorial. Another expert agreed and added that the issues around body weight are more complicated than this study suggests.
There is a case to be made that a body mass index in what is now considered the overweight range might be redefined as normal, Katz said.
This study, however, diabetes & metabolism journal of only at death, not chronic medical conditions, Katz noted. This study would be blind to such effects," he said. Katz also noted the trends in obesity may be tipping the scale toward increased risk of dying.
This study suggests being overweight and remaining so might cukorbetegség nyárfa kérge health advantages, "but moving from overweight to obese, and from obese to more obese, is a serious peril and many in the population are doing exactly that," Katz pointed out. More information For more on obesity, visit the U. National Library of Medicine.