To assess the effect of phosphatidylserine-omega-3 consumption on the immune system parameters in children suffering from attention and concentration deficits.

Inclusion Criteria:

1. Parental written informed consent.
2. Age: 13≥ years ≥8 (including).
3. Gender: both male and female.
4. TOVA computerized test score ≤-1.8 at baseline.
5. Language: Subjects, parents, and teachers must be able to read, write and speak Hebrew.
6. Normal weight and height according to Israeli standards.
7. 21 days without any treatment for ADHD symptoms, whether medication or food supplement.

Exclusion Criteria:

1. History or current diagnosis of any serious systemic (e.g., diabetes, hyper/hypothyroidism, etc.) or neurological condition (e.g., epilepsy, brain tumors, etc.)
2. Pervasive developmental disorder or Non-Verbal Learning Disability
3. Any evidence of psychotic disorders, suicidal risk, any current psychiatric co-morbidity that required psychiatric pharmacotherapy.
4. History of allergic reactions or sensitivity to marine products (seafood), soy or corn as well as any illness, which may jeopardize the participants health or limit their successful trial completion.
5. Having a sibling already included in the study.