**3. Results**

#### *3.1. Participants*

16 out of 28 children and adolescents completed the study. The proportion by gender corresponds to the general prevalence of ADHD worldwide. We had 81% male and 19% female participants in our study.

During the diet phase 12 participants either dropped out (*n* = 2) of the study at their own request or were considered non-responders (*n* = 10). None of the participants had medical treatment for ADHD during the whole study (Table 2).

**Table 2.** Characteristics of dropped out participants.

