Nutrient Shortfalls Worsen ADHD Symptoms

In 2025, Rachel V. Gow and team from the University of Roehampton studied 57 UK individuals (47 children, 10 adults) with ADHD and other neurodivergent conditions like autism. They measured blood levels of key nutrients (omega-3s, zinc, magnesium, B-vitamins, vitamin D) and correlated these with ADHD symptom severity using the Conners Parent Rating Scale.

Results showed widespread nutrient deficiencies: 63% had suboptimal omega-3s, 82% low vitamin B2, 62% low vitamin D, and 53% low zinc. Lower magnesium and omega-3s were linked to worse disruptive behavior and learning issues. Over 80% had food intolerances to dairy and casein, with 53% to wheat.

For someone with ADHD, these shortfalls may impair neurotransmitter function (e.g., dopamine, serotonin), worsening focus, impulsivity, and mood. Low omega-3s could hinder brain signaling, while insufficient B-vitamins and zinc may disrupt emotional regulation.

Boost omega-3s, B-vitamins, and zinc via diet or supplements to potentially ease ADHD symptoms.