Obesity strongly linked to depression

Depression and obesity are very strongly associated and doctors should pay more attention to the link, according to researchers.
 
The researchers called for a better understanding of the risk of developing one when a person has the other. They stressed that more understanding is needed for effective treatment and prevention.
 
"Although the topic is largely unexplored, several psychosocial, lifestyle and physiological factors may be involved in the complex inter-relationship between obesity and mental illness," said Dr Evan Atlantis from the University of Adelaide’s School of Medicine, lead author of the study.
 
“Obese people – especially those who perceive themselves as being overweight - often experience weight-related stigma and discrimination, and consequently present with symptoms of low self esteem, low self worth, and guilt,” Dr Atlantis explained.
 
Obesity is also associated with socioeconomic disadvantage and low levels of physical activity, both of which are strong predictors of depression, according to the researchers.
 
"Obesity may constitute a chronic stressful state, which in turn can cause significant physiological dysfunction. Such dysfunction would then predispose individuals to depressed mood and associated symptoms," Dr Atlantis said.
 
The researchers said that reduced physical activity and overeating – especially comfort foods rich in fats and sugars to improve mood – are common among depressed and anxious patients.
 
Dr Atlantis said that patients presenting to their doctor with symptoms of common mental disorder should be assessed for obesity and related chronic diseases, and vice versa.
 
"A multidisciplinary approach that focuses on promoting a healthy lifestyle is important. Further research on how best to deliver lifestyle interventions is needed, along with government action on taxes, tariffs, and trade laws to encourage the supply and consumption of healthy food and physical activity choices," he said.
 
The research paper is published in the British Medical Journal and is also the subject of an editorial in the same issue.

[Posted: Thu 08/10/2009]