Health-care professionals recommend physical activity as a key ingredient to any stress-management initiative. They suggest that playing sports and getting regular exercise can calm your worries and clear your mind, according to the Anxiety and Depression Association of American.

Attention deficit hyperactivity disorder can have a major impact on learning and socialization. Behavioral therapy and medication are the key modes of treatment, but people have been interested in the role of diet in ADHD for years.

Anxiety disorders are medical conditions that affect approximately 40 million Americans ages 18 or older, according to National Institute of Mental Health.

While anxiety is an emotional state, it also can affect you physically. Its symptoms can lead to fatigue and other long-term effects. You can stop this and other anxiety-related problems if you catch the warning signs early and treat the problem. Getting rid of anxiety and fatigue may be as simple as stress management.

Low-functioning people with autism often engage in self-stimulating behaviors such as rocking back and forth in their seats, flicking fingers in front of their eyes or putting objects in their mouths. Sensory activities provide the stimulation that their nervous systems seem to be seeking.

You may choose to remove gluten from your diet in hopes that it will clear up some of your digestive complaints or even your neurological symptoms. Other people may choose to remove all grains from their diet to improve digestion during a complete detoxification.

The "fight or flight" response is a normal reaction to physical danger, according to Dr. James Balch and Mark Stengler, authors of "Prescription for Natural Cures." It triggers brain chemicals you need to fight off or run away from danger.

According to the Mayo Clinic, clinical depression can be treated by psychotherapy as well as medication. Antidepressants affect the release and reuptake of some common neurotransmitters that send messages between neurons. Some of these include dopamine, serotonin, and norepinephrine.

A panic attack is the sudden onset of great fear that produces a bodily response. Common panic responses include sweating, shaking and choking. Panic attacks may be caused by psychological distress or medicinal drugs. When these episodes occur during sleep, they are called nocturnal panic attacks.

Caffeine is a stimulant found in many beverages, such as coffee, soda and energy drinks. Antidepressants are a specific class of prescription medication designed to improve mood.

Ritalin, the most popular formulation of the stimulant medication methylphenidate, is prescribed to treat conditions such as attention deficit hyperactivity disorder, narcolepsy, obesity and lethargy or fatigue.

Adderall--known generically as amphetamine and dextroamphetamine--is a central nervous system stimulant prescribed to treat attention deficit hyperactivity disorder, or ADHD, and narcolepsy. Adderall is a controlled substance with a high potential for abuse and addiction.