Childhood depression may up addiction risk in later life

Children who suffer from psychiatric disorders such as depression or ADHD are at a higher risk of developing addiction later in life, a study has found.
Children's health and well-being while growing up can be indicators of the potential health issues they may encounter years later.
Based on a large amount of data from previous studies on these participants, researchers from Vrije Universiteit and University Medical Centre Groningen in the Netherlands identified a correlation between various psychiatric disorders among children and later risk of developing addictions.
They found that individuals diagnosed in childhood with attention-deficit/hyperactivity disorder (ADHD), oppositional defiant disorder (ODD)/conduct disorder (CD), and depression had an increased risk of developing addictions.

Results concerning anxiety were less clear. The risk may depend on the specific type of anxiety disorder, but to date, no studies have focused on this topic.
"We know that ADHD in childhood increases the risk for later substance-related disorders, but until now, no systematic evaluation of other childhood psychiatric disorders had been conducted," said Annabeth P Groenman, researcher at University Medical Centre Groningen.

"Our findings show that not only ADHD increased the risk of addictions, but that other childhood psychiatric disorders also increased risk," said Groenman.
"This indicates the importance of early detection of mental health problems in a wider group. Addiction is a major cause of immense personal, familial, and societal burden, and prevention is therefore an important goal," he said.

The study re-analysed data of 37 previous studies containing a total of 762,187 individuals, of whom 22,029 had ADHD, 434 had disruptive behaviour disorders (such as ODD/CD), 1,433 had anxiety disorder, and 2,451 had depression.
The researchers identified studies looking at childhood psychiatric disorders and later addiction.
Disruptive behaviours (ODD/CD) frequently co-occur with ADHD, in approximately 30 per cent of cases.
This so-called "comorbidity" is often thought to be the main cause of addictions in individuals with ADHD.
However, the results suggest that co-occurring ODD/CD in ADHD does not fully explain the risk of addictions in this group.
"Now that we have firmly established children with psychiatric disorders as a high-risk group for later substance-related disorders, the next step is to make parents, clinicians, and the government aware of these risks and work together in reducing the risks for addiction and its debilitating consequences," said Jaap Oosterlaan, from Vrije Universiteit.

The study was published in the Journal of the American Academy of Child and Adolescent Psychiatry (JAACAP).