OPTI Factor. Nutrient Delivery System
Nutrient Delivery System

Fatigue Facts


Opti Factor

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Fatigue is a common health complaint. It is one of the hardest terms to define, and a symptom of many different conditions.

Fatigue, also known as weariness, tiredness, exhaustion, or lethargy, is generally defined as a feeling of lack of energy.
Fatigue is not the same as drowsiness, but the desire to sleep may accompany fatigue. Apathy is a feeling of indifference that may accompany fatigue or exist independently.

Fatigue is common. Around 20% of Americans claim to have fatigue intense enough to interfere with their having a normal life. Physical causes are estimated at 20-60%, and emotional causes are the other 40-80%. The challenge is how to tell what is causing your fatigue and whether it is serious enough to see your doctor.

Fatigue Causes

Lifestyle. Feelings of fatigue often have an obvious cause, such as sleep deprivation, overwork or unhealthy habits. Psychological. Fatigue is a common symptom of mental health problems, such as depression and grief, and may be accompanied by other signs and symptoms, including irritability and lack of motivation. Medical. Unrelenting exhaustion may be a sign of an underlying illness, such as a thyroid disorder, heart disease or diabetes.

Common Causes of Fatigue Include:

Fatigue Symptoms

Symptoms of Fatigue Include:

When to Seek Medical Care

Generally, you need to see your doctor if you experience any of the following:

If you experience any of the following, you should go to a hospital’s Emergency Department:

Fatigue Treatment

Many causes of fatigue may be treated with medications.



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© 2010 Markit Health, LLC. All Rights Reserved These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure or prevent any disease. The information provided on this site is for informational purposes only and is not intended as a substitute for advice from your physician or other health care professional or any information contained on or in any product label or packaging. You should not use the information on this site for diagnosis or treatment of any health problem or for prescription of any medication or other treatment. You should consult with a health-care professional before starting any diet, exercise or supplementation program, before taking any medication, or if you have or suspect you might have a health problem. You should not stop taking any pharmaceutical product without first consulting your prescribing physician.