Feeling dizzy after standing up or after exercise can be both frightening and debilitating but is not always the result of a serious condition. Dizziness caused by standing up is known as orthostatic hypotension or postural hypotension.

Dopamine is a naturally occurring chemical in the body that functions as a neurotransmitter and neurohormone. It primarily affects movement control, emotions and the pleasure and reward centers of the brain. It activates five dopamine receptors, D1 through D5, which are found throughout the brain and body.

Your brain relies on small molecules, called neurotransmitters, to facilitate signaling between brain cells, as well as transmission of signals to nerves throughout the body. One neurotransmitter important for signaling in the brain is dopamine.

The show must go on for 52-year-old Gord Downie, who suffers from glioblastoma, an aggressive and incurable cancer.

Magnetic resonance imaging, or MRI, is a noninvasive device used for evaluation, assessment and diagnosis of conditions, diseases and injuries. An MRI generates images of the brain and spine from multiple angles, and it also can provide pictures of blood vessels, tissues and organs.

Dopamine & norepinephrine are two critical neurotransmitters that regulate your mood and behavior. Both dopamine and norepinephrine are in tricyclic antidepressant medications which are used to treat depression.

Magnetic resonance imaging, or MRI, brain scans can be a useful diagnostic tool for many different conditions. However, their ability to diagnose conditions such as mental illness is still limited.

A brain aneurysm is defined as "a bulge or ballooning in a blood vessel in the brain." Aneurysms often develop in arteries at the base of the brain and are usually the result of thin and degenerating artery walls, according to MayoClinic.com.

A neurological condition that results in brain tissue loss, brain atrophy can occur in small parts of the brain or affect both hemispheres of the brain, according to the National Institute of Neurological Disorders and Stroke.

Gastritis is the irritation and inflammation of the lining of your stomach due to bacterial infection, use of certain medications or injury.The condition can come on suddenly in an acute attack or can be more chronic in nature.

The right and left sides of the brain focus on different skills which, when combined, enable individuals to be rational and spontaneous, analytical and creative. As with physical exercise, working on both sides of the brain enables them to sharpen and coordinate.

Researchers are increasingly interested in the role certain dietary supplements may play in mood disorders and cognitive functioning. Flaxseed oil, made from the seeds of the flax plant, may provide a number of benefits for mood and brain functioning. Do not use flaxseed oil in place of conventional medical treatment.