ADHD and Supplements

          We get more questions about supplements than almost anything else in this practice, usually some version of “what should I be taking.” Our answer is that we don’t recommend a standard supplement stack for ADHD, because the patients we see don’t have a standard deficiency. Instead, we test first and supplement based on what is actually low in that specific person.

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          A few nutrients come up often enough to be worth understanding. Omega-3 fatty acids, particularly EPA and DHA, support cell membrane function that neurotransmitter signaling depends on, and several studies show modest but real improvements in attention with adequate omega-3 status. Iron is directly involved in dopamine synthesis, and low iron levels, even when not low enough to meet criteria for anemia, have been associated with worse ADHD symptoms in multiple studies. Vitamin D deficiency is also seen at a higher rate in people with ADHD compared to the general population. Zinc and magnesium play supporting roles in the same neurotransmitter pathways, although the evidence base for those is less consistent than for iron or omega-3s.

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          The reason we don’t default to a generic list is simple. Supplementing a nutrient someone doesn’t actually need rarely helps and can sometimes cause problems, particularly with fat-soluble vitamins or with iron in someone who is not deficient. Testing first allows us to target what is actually out of range rather than guessing. This also connects back to the broader framework in this resources section. A nutrient deficiency affecting dopamine production is a root cause in the sense described on the Functional Medicine page, and while correcting it is rarely the entire treatment, it is often the piece that allows everything else, including nutrition, sleep, and medication, to work more effectively.