Holton and co-author Joel Nigg, of Oregon Health & Science University, looked at whether or not children age 7 to 11 were following key health recommendations for this age range from the American Academy of Pediatrics, the National Sleep Foundation, and the U.S. Department of Agriculture.
Recommendations include getting no more than 1 to 2 hours of total screen time daily; getting at least 1 hour of physical activity daily; limiting consumption of sugar sweetened beverages; getting 9 to 11 hours of sleep per night; and consuming 7 to 10 cups of water daily, depending on age. Holton and Nigg created a lifestyle index to summarize the total number of healthy lifestyle behaviors adhered to by 184 children with ADHD as compared to a control group of 104 non-ADHD youth.
According to the study results, children with ADHD were more likely to consume artificially sweetened juice, less likely to read for more than one hour per day, more likely to have more than two hours of screen time per day, and more likely to engage in fewer hours of physical activity during the week. Parents of children with ADHD were also much more likely to report that their children have difficulty falling asleep, to report concern about their child’s sleep habits, and fear that sleep problems may be leading to behavior issues. These associations held even in those children not currently taking ADHD medication, which is known to cause sleep disturbance.
“Parents of children with ADHD should talk with their pediatrician about how to improve health behaviors, such as limiting screen time, encouraging physical activity, improving bedtime routines, and drinking water rather than other beverages,” Holton said.
In most ADHD studies, a child’s condition is often assessed only by a single survey question about past diagnoses. Holton and Nigg employed a rigorous study design that involved parental reports, diagnostic interviews, and consensus of two clinical experts to screen for ADHD and additional psychiatric disorders.
The study is limited by the fact that it only looked at children’s behaviors at one time point. However, the results suggest that future clinical trial research is needed to quantify the impact of a combined lifestyle intervention on ADHD symptoms. It is possible that changing multiple lifestyle behaviors at once can lead to other healthy behaviors.
“For example, physical activity increases thirst, making water consumption more attractive. Physical activity can also offset screen time and can improve sleep. Similarly, removal of caffeinated beverages prevents their diuretic effect, helps increase water consumption, and can help prevent sleep disturbance,” Holton said. “As research into health outcomes in children with ADHD continues to provide new insights, focusing on the overall number of healthy lifestyle behaviors may become important.”