Obesity and depression are a two-way street

NEW YORK - People who are obese are at increased risk of becoming depressed, and people who are depressed are at increased risk of becoming obese, Dutch researchers have found.

People who are obese are at increased risk of becoming depressed,  and people who are depressed are at increased risk of becoming obese,  Dutch researchers have found.(File Photo)

"There is a reciprocal association over time between depression and obesity," Dr. Floriana S. Luppino, of Leiden University Medical Center, the Netherlands, told Reuters Health by email.

Obesity, Luppino and colleagues found, increases the risk of depression in initially non-depressed individuals by 55 percent and depression increases the risk of obesity in initially normal-weight individuals by 58 percent.

Luppino said the analysis was not designed to determine a given person's risk of depression, only to figure out how much obesity increased that risk. However, for comparison, a recent study funded by the National Institute of Mental Health found that nearly one out of four cases of obesity is associated with a mood or anxiety disorder.

These findings, the NIMH notes on its website, appear to support what other studies have found - that obesity, which is on the increase in the US - is associated with increasing rates of depression and other mental health problems.

The new findings stem from pooled data from 15 published studies that looked at whether being overweight or obese is associated with depression, and vice versa.

The studies, which collectively involved more than 58,000 people, used body mass index, or BMI, to gauge how fat or thin a person is. For reference, a US adult with a BMI of 25 or more is considered overweight, while one with a BMI of 30 and above is considered obese.