What do systematic reviews say?

PUFA vs placebo

Summary of findings table ‐ PUFA showed no clear difference in loss to compared with placebo (moderate certainty).

• Polyunsaturated fatty acids (PUFA) for attention deficit hyperactivity disorder (ADHD) in children and adolescents 2023 · Cochrane Headline outcomes only
  RR 1.03 [0.77, 1.37]
  13 studies · 1121 participants
  Moderate