Researchers believe that depression can be a cause for depression; their effects are often considered psychologically.
Although previous studies have found that obese individuals are likely to suffer from depression, it can not be determined whether the depression is changing or not.
Now, according to experts, the highest body weight index (BMI) associated with genetic guidelines may lead to depression, which is stronger than that of men. Moreover, the study finds that the result can be influenced by such factors as the body's image.
"The overweight people are not satisfied by the majority of people, which can be partly at least [a] Causes of BMI [on] Depression, "said Tim Fraile, Professor of Exeter Medical School, co-author of the study.
British and Australian researchers, published in the International Journal of Epidemiology, describe how the UK used biobank data. These studies cover approximately 500,000 participants from 37 to 73 years of age in 2006-10.
Researchers have examined 73 genetic variations associated with high BMI, also associated with the risk of diabetes and heart disease. They also considered 14 genetic variations related to the high percentage of 14 fatty acids, but they were associated with the risk of lowering their health.
The team then examined the participants' numerous reports of hospital records and questionnaires, including self-reported reports of the fear and depression clinic or psychiatrist. About 49,000 people believed to be depressed in the team.
In general, according to the team, the high HIV infection can penetrate deeply into people.
Researchers also found that the incidence of genetically high BMI was depressive, and that women had a stronger effect than men. The results were also conducted when performing additional tests, except for those with family depression, and the analysis was repeated in data from a major international project called Psychiatry Genomics Consortium.
Taking into consideration the genetic variables, taking into account factors including age and gender, they found that the increase in each of the BMI's 4.7 points increased by 18% in general and 23% for women.
When the group collected data from a variety of sources, they found 14 genetic variables that increased body fat, but were not linked to metabolism, because of the possibility of increased depression.
"This psychological component shows that it is as strong as any physiological component [the latter] absolutely no, "said Freilings, who feels badly in body shape.
There are some limitations of the study: First of all, he also looked at people who looked at our European ancestors and introduced self-reported data.
While other studies show that weight gains do not show the risk of depression, Frayling says it is possible. "This will allow [one] which has a great impact on depression, "he said.
Naveed Sattar, a professor of medicine for metabolism at Glasgow University, welcomed the study. "These new data are likely to contribute to a strong depression," he said. "Of course, many other factors can lead to depression, but in some cases weight loss can help improve mental health, but overall self-control should help reduce depression."