www.saveonlabs.com. 1. Vitamin D, zinc, and ferritin (blood test). ADD is thought of as a lack of dopamine being released from brain cells to help nerve cell communication. Inadequate amounts of or poor messages from dopamine are felt to lead to the difficulties with inattention, hyperactivity, and impulsiveness. Many of the medications for ADD are thought to slow the body’s recycling of dopamine between neurons, and make more dopamine available for use. One step that limits the amount of dopamine that is made by cells is controlled by a protein (called an enzyme) called tyrosine hydroxylase.
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