Family Matters

ADHD May Prime Boys for Obesity

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ADHD has been linked to struggles with drugs and alcohol, less schooling and more arrests, but the latest study shows it may also contribute to problems with weight as well.

In the study published in Pediatrics, researchers connected the impulsive behavior that can characterize attention-deficit/hyperactivity disorder (ADHD) with the overeating that contributes to calorie overload.

In the 33-year study that tracked boys with ADHD into adulthood, men who were hyperactive as children were twice as likely to have higher body-mass-index readings and rates of obesity than men who didn’t have the condition as children. Of men diagnosed with ADHD as kids, 41% were obese compared with 22% of men who didn’t have ADHD as children. The average rate of obesity for men in this age group was 24%.

The researchers say they did not set out to explore the relationship between ADHD and weight; the study was designed to investigate new insights into brain-structure differences among people with ADHD. But in 2003, when researchers received a grant to perform brain MRI scans on the men to evaluate their psychiatric health, many of the study participants were too large to fit in the scanner. “One of these gentlemen really wanted to help out, but we had to squeeze him in, inch by inch,” says Dr. Francisco Xavier Castellanos, the study’s senior author and a professor of child and adolescent psychiatry at New York University’s Langone Medical Center.

(MORE: Majority of Doctors Do Not Follow Treatment Guidelines for ADHD)

For practical reasons, the scientists began asking the men for height and weight measurements to see if they would fit inside the MRI machine, which has a diameter of about 2 ft. They found that nearly three times as many men from the childhood hyperactivity group couldn’t fit in the scanner — 17 men compared with six who did not have the disorder. Intrigued, they decided to systematically collect data on the men’s weight.

“There had been suggestions in the past that ADHD might be related to obesity,” says Castellanos. “There were a lot of checks to make sure this was not due to other conditions. We were able to confirm that this risk seemed really related to childhood diagnosis of ADHD.”

The study controlled for factors including depression, anxiety, drug and alcohol abuse, and education and socioeconomic status, all of which have also been associated in other studies with obesity. But even though the childhood ADHD group had a median income that was $50,000 lower than that of the men in the control group, this economic factor did not appear to be driving the association between ADHD and obesity.

It’s not entirely clear why the disorder, which can make focusing and concentrating on tasks more difficult, would lead men with the disorder to weigh so much more than their peers. But the researchers suspect that impulsivity and poor decisionmaking skills played a role. “We live in a society with supersized amounts of food,” says Castellanos. “If someone has less than the average amount of self-control because of the ADHD, they are less able to withstand the temptations of food.”

(MORE: Understanding the Rise in ADHD Diagnoses: 11% of U.S. Children Are Affected)

The results suggest that among the other behavioral issues that children with ADHD may face, including problems with drugs and alcohol, maintaining a healthy weight might be an additional concern, since obesity is associated with a host of other chronic conditions such as diabetes and heart disease. Keeping calories in check can be a challenge for even the most determined person, but these findings hint that weight might be a particularly frustrating struggle for those with ADHD.

9 comments
hikerrd
hikerrd

Just curious if they were also stunted; since stimulants may result in poor weight gain and growth (while kids are on them) I wonder whether the stunted height is part of the reason for the higher BMI (wt/htxht).

confettifoot
confettifoot

Idiotic article. ADHD meds affect metabolism and everyone knows it. That's not all they affect, either. But Phrarma isn't going to go there, and where Pharma goes, the media goes. Feh.

urgelt
urgelt

The drugs used to treat ADHD have not been ruled out as a decisive factor in the higher rate of adult-onset obesity.  The conclusion that impulsivity is to blame is wildly premature.

tturner02478
tturner02478

Were subjects from the ADHD group treated with stimulants (e.g., methylphenidate, amphetamines, etc.) as children? Perhaps this might explain obesity in adults.

thewholetruth
thewholetruth

ADHD is a modern day illness created by the food manufacturers due to chemicals in the food. The food today even the so-called "natural" ones are not natural they have been polluted with Aspartame,Sucralose,Saccharin, MSG, and the billion dollar profit drug high fructose corn syrup. 

Diet and exercise does not work for millions of people because the food today creates diabetes and obesity. The food also creates ADHD

An Insulin resistance diet reverses Obesity and ADHD    SEE HERE http://type2diabetesdietplan.blogspot.com/2013/01/my-child-has-adhd-what-did-they-put-in.html

mentocpa
mentocpa

@confettifoot
Allow me to disagree with you and also the writer of the article. Such treatment does not necessarily require the use of drugs. For example, I take care of my child using the service I get from this site and the treatment is completely natural way, without any drugs.