Better diets are linked to sharper focus in teens with attention disorders

A small study holds that most teenagers eat poor diets regardless of their mental health. However, among adolescents with attention disorders, a Mediterranean-style diet and specific vitamins are strongly associated with better cognitive test performance.

A small study of Australian teens indicates that while adolescents with and without attention-deficit/hyperactivity disorder consume similarly poor diets, those who eat healthier foods experience fewer attention challenges. The research, published in Nutritional Psychiatry , describes links between specific eating patterns and better cognitive performance. Attention-deficit/hyperactivity disorder is a developmental condition characterized by challenges with focus, organization, and impulse control.

Treatment often involves medications that help manage these behaviors. Doctors and families also look for lifestyle changes that might help support daily functioning. Nutrition has emerged as an area of high interest in recent years.

Researchers want to know if what young people eat affects how their brains manage tasks. Some evidence suggests that a lack of specific nutrients might worsen behavioral symptoms. Nutritionists often contrast the standard Western diet with the Mediterranean diet.

The Western pattern generally features high amounts of processed foods, added sugars, and saturated fats. The Mediterranean diet relies heavily on plant-based foods, olive oil, nuts, and fish. This eating pattern provides high levels of omega-3 fatty acids, vitamins, and antioxidants.

Scientists suspect these components help reduce inflammation and support brain health. Most studies looking at these foods and attention have focused on younger children in non-Western countries. Naomi Lewis, a researcher at the University of the Sunshine Coast in Australia, led a team to investigate this topic in older adolescents.

Lewis and colleagues Jacob M. Levenstein and Anthony Villani wanted to track what teenagers in a Western country were actually eating. Adolescence is a time when young people gain more control over their food choices. Teenage years represent a period of rapid growth that requires adequate nutrition.

The researchers organized a case-control study, which compares a group of people with a specific condition to a group without it. They recruited 39 adolescents between the ages of 13 and 18. Eighteen of the participants had a formal diagnosis of attention-deficit/hyperactivity disorder, while 21 youths without the condition served as the healthy control group.

The scientists gathered detailed health and demographic information from the teens and their parents. The participants also filled out a four-day food diary. They recorded everything they ate and drank over three weekdays and one weekend day using standard measuring cups and spoons.

To evaluate the nutritional data, the team used specialized software. They calculated the exact amounts of vitamins, minerals, and fats the teens consumed. The researchers compared these intake levels against Australian national dietary guidelines.

They also calculated a score for each participant based on how closely their eating habits resembled a Mediterranean diet. To measure cognitive performance, the teens completed a computerized visual test. The 21-minute assessment required participants to respond quickly and accurately to specific images on a screen.

The program measured their attention span, reaction time, and impulse control. The participants and their parents also completed standard questionnaires about behaviors related to focus and hyperactivity. The teens with the diagnosis scored higher on measures of inattention and impulsivity than the control group, matching their diagnosed status.

When the researchers looked at the overall dietary habits, they found that both groups ate relatively poorly. The teens routinely exceeded recommended limits for saturated fat, sodium, and sugar. Most of the youths failed to consume enough fiber, calcium, and long-chain omega-3 fatty acids.

When comparing the total nutritional intake between the two groups, the differences were not statistically significant. The adolescents with the diagnosis ate mostly the same foods as their peers. One isolated difference was that the teenagers with the condition reported consuming candy and sweets more frequently.

The researchers did notice some distinct dietary trends related to age. As the control group participants got older, their diets tended to improve slightly. In contrast, the diets of the teens with the condition tended to worsen as they moved through adolescence.

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