My daughter was recently diagnosed with ADHD at age 7 years 2 months old, she's in first grade. She's been on fish oil for almost a year, we started last year while she was in kindergarten because she was repeatedly being sent the principal's office, she missed recesses to finish her class work, sometimes aggressive/physical towards other kids. We've avoided food dyes since she was a baby (food dyes are in everything, including bath soaps and medicine!), she gets limited sugar, no caffeine, and she naturally eats a lower carb diet, we've practiced positive behavior therapy since she was 4 years old. She continued to struggle in school this year, her teacher was very concerned so we decided it was time to get her tested for ADHD. I have 2 siblings with it and my husband was diagnosed when he was an adult, so I have a lot of experience with it. We decided to try a low dose stimulate medicine for 2 weeks to see how it made her feel. She is now able to complete her assignments in class, her peers want to partner up with her on activities and play with her, handwriting is better, her reading scores shot up, she's actually ahead of a lot of the kids in her class now, her math improved. She tells her teacher she feels great, the teacher said my daughter's mood is happier. She's now excited to go to school, before she didn't want to go most days. We've seen a huge difference after school with homework and in Taekwondo, she can focus and has finally advanced after 4 months of not being able to. She's on the lowest dose of an extended release stimulate and it has made things so much easier for her, she only takes it during the school week. No medicine on weekends or during school breaks. I think the fish oil did/does help her, she also takes a daily probiotic and multi vitamin. I think you should go with your gut on how to proceed with your child's diagnosis, but try to keep an open mind if symptoms don't improve enough with diet and behavioral therapy.