A new study suggests that the body mass index (BMI) greater than 30 is associated with a higher risk of depression.
A team from the University of South Australia and the University of Exeter (UK) examined an example of more than 48,000 people who suffer from depression and belong to the United Kingdom Biobank cohort. This large, long-term study provides access to genomic data for British residents aged 37 to 73 years.
The researchers also established a control group comprised of 290,000 people born between 1938 and 1971.
Using this data, they analyzed genes associated with higher BMI and a lower risk of diseases such as diabetes to check that health problems are associated withobesity they were at origin depression.
The association seems more important between women as in men.
We're talking about obesity ITM greater than 30 kg / m2, BMI calculated by weight distribution in kilograms in relation to the height in square meters.
Researchers have noticed this very thin men and low BMI are more prone to depression than those with normal weight or very thin women.
"The current epidemic of obesity is very worrying"explains Professor Elina Hypponen, who led the study."Each year the depression costs the international community EUR 1 trillion, according to estimates. "
"Our research suggests that overweight does not only increase the risk of chronic diseases, such as cancer and cardiovascular problems: it can also cause depression."
The study is not the first to establish a link between ITM and depression. In 2016, researchers have already found that a woman with an ITM index of between 30 and 34.9 is twice as high as the risk of depression compared to a woman who has a normal weight. Researchers at Brigham & Women's Hospital, Boston, USA, presented results this year women with high body weight He also presented the risk postpartum depression more important.
The Netherlands study, presented at the European Congress on Obesity, also proposed children with overweight At the age of 8 or 13, it was three times more likely to fall into depression later in life.