12,858 ADHD Labs Tested, These 3 Vitamins Were Always Low

Summary

Dr. LeGrand argues that standard laboratory “normal” ranges may miss vitamin levels he considers too low for optimal brain function. In his analysis of 12,858 patient tests, he found low levels of folate, vitamin B6, and vitamin D to be common. These percentages come from his own patient data and preferred ranges, so they should not be treated as universal estimates.

He compares dopamine production to a string of lights, where several steps must work for the whole system to function. In his account, vitamin D supports the system, folate helps an early step, and B6 contributes to the final step. He links low levels to difficulties with focus and task initiation, mood, and sleep, while emphasizing that similar symptoms can have different causes.

Key Strategies and Cautions

• Use testing rather than guessing. The presenter recommends reviewing lab results with a qualified health professional, noting that “normal” results may not answer every clinical question.
• Folate: He says folate supports the process involved in dopamine production and cautions that folic acid and other forms are not interchangeable for everyone. He also stresses that folate and B12 should be considered together, rather than supplementing folate indiscriminately.
• Vitamin B6: He describes B6 as involved in producing dopamine, serotonin, and GABA. He mentions a small study involving B6 and magnesium in children with ADHD, but notes that it had no placebo group. He warns that excessive long-term B6 intake can harm nerves and that B6 may come from multiple products, such as multivitamins and energy drinks.
• Vitamin D: He describes vitamin D as supporting dopamine-related processes and says sunlight or D3 may help some people. He advises testing before dosing and retesting afterward, since excess vitamin D can raise calcium levels. He says he often pairs D3 with K2, based on his practice.
• Consider the whole picture. His main point is that addressing just one vitamin may not help if other parts of the process—or other health factors—also need attention.
• Do not treat supplements as a substitute for medical care. The video promotes a lab guide and paid assessment, but viewers should discuss testing and supplements with their own clinician, especially if they take medications.

Presenters and Sources Mentioned

• Presenter: Dr. LeGrand.
• Sources referenced in the video: Dr. LeGrand’s patient-test analyses; standard laboratory reference ranges; a study of 40 children with ADHD involving vitamin B6 and magnesium, described as having no placebo group; researchers’ pooled studies comparing vitamin D levels in children with and without ADHD; and the U.S. National Institutes of Health warning about high-dose vitamin B6.