NHAND Conference 2023 Your brain contains a mind-blowing number of nerves—about 1,200 cubic centimeters of nerves, which is only a bit larger than a quart of milk (946 cubic centimeters). In an instant, your miraculous CNS can be moving your arms and legs, thinking about what you’ll have for dinner, remembering a conversation you had yesterday or a memory from elementary school, figuring out a problem, talking to a friend and feeling love, hope and joy. Doing those jobs for you are four primary chemicals: dopamine, serotonin, norepinephrine and acetylcholine. ADHD, depression, cognitive decline, decreased motivation and other symptoms are caused less than optimal amounts of these hormones. Learn natural strategies that increase these important neurohormones to improve focus, memory, energy, mood and recall.