Constant tiredness- possible causes

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Everyone’s energy levels but also the tone will change once you learn to combat common causes of tiredness. Most people tend to think too busy lifestyle the main cause for their state of fatigue, and generally they are right.

If you feel tired give yourself two to three weeks to make some changes in your lifestyle. Sleep more, get involved in fewer social activities, drink more fluids, use a multivitamin and quit caffeine and alcohol.

If fatigue persists after these changes you need professional help. Exhaustion could be a sign of more serious diseases that should be treated by specialists.


1. Overview
2. Mineral or vitamin deficiency
3. Anemia
4. Diabetes
5. Thyroid disorders
6. Depression
7. Sleep apnea

Mineral or vitamin deficiency

Low levels of iron, vitamin D or B12 can trigger fatigue, anxiety and drowsiness. Experts believe that a significant percentage of people suffer from vitamin D deficiency and low levels of this vitamin can cause pain and muscle weakness.

The only way you can know for sure if your vitamins or minerals values are low, are blood tests.


This condition is common in female who have quantitatively important menstrual cycle and who do not eat enough foods containing iron. Fatigue caused by anemia is the result of lack of sufficient red blood cells, those that bring oxygen from the lungs to the tissues and cells.

People who suffer from anemia will feel weak and their breathing will be difficult. Anemia can be caused by iron or vitamin deficiency, blood loss, internal bleeding, rheumatoid arthritis, cancer or kidney failure.
Symptoms: Fatigue is the main event. Can include extreme weakness, sleep disturbances, lack of concentration, rapid heartbeat, chest pain, headache. Simple exercise such as climbing stairs or walking short distances can cause fatigue.

Investigation: A thorough evaluation to detect anemia includes a complete physical examination and blood tests including a complete blood count to check the level of red blood cells. You can make other investigations such as determination of occult bleeding in stool in case of detection of unknown etiology anemia.


Many people are diagnosed each year with type 2 diabetes and many other people could suffer from the disease without knowing they have it. Sugar or glucose is the main fuel that provides energy to the body. People who suffer from type 2 diabetes can’t use glucose properly.

Symptoms: Besides exhaustion also appear excessive thirst, frequent urination, hunger, weight loss, irritability, vaginal fungal infections and blurred vision.

Tests: There are two major investigations to detect diabetes. Rapid test for determining blood glucose levels after a period in which the patient did not eat or drink anything for 8 hours and glucose tolerance test according to which blood is analyzed twice before taking a glucose solution and then two hours later.

Thyroid disorders

When a person suffers from thyroid hormone imbalances even after daily activities will feel very tired. Overproduction of thyroid hormones may accelerate metabolism and low production of thyroid hormones slows metabolism.

Symptoms: Hyperthyroidism causes fatigue and muscle weakness that occurs especially in the thighs. Exercises such as cycling or climbing stairs become difficult. Other events include unexplained weight loss, constantly feeling of hot, increased heart rate, shortness and decrease of menstrual cycles frequency and thirst. Hyperthyroidism is most commonly diagnosed in women aged 20-30 years, but can occur in older men and women.

Investigation: thyroid diseases can be detected through blood tests.


More than just a low mood, depression is a very important disease that affects how a person sleeps, eats, feels and perceives himself and others. Without treatment, symptoms of depression can last for weeks, months and even years. It is important to recognize the warning signals and to provide assistance in time.

Symptoms: the doctor can diagnose depression by patient responses from a series of questions. If the patient experiences at least five of the events below, for more than 2 weeks or if symptoms interfere with the normal daily activities, he should see a doctor or psychiatrist.

Symptoms of depression that may be encountered may include:
- Fatigue or low energy levels
- Too little or too much sleep
- Sadness, anxiety or feeling empty soul
- Reduced appetite, weight loss or increased appetite and weight gain
- Loss of interest or pleasure in activities that challenged pleasure in the past
- Restlessness or irritability
- Persistent physical symptoms that do not respond to treatment, such as headaches, chronic pain, constipation and other digestive disorders
- Difficulty concentrating, memory and decision making
- Feelings of guilt, hopelessness or worthlessness feeling
- Thoughts of death or suicide.

Sleep apnea

If fatigue persists on awakening, it is very likely for you to suffer from sleep apnea. Sleep apnea is a disorder characterized by brief interruptions of breathing during sleep.

Symptoms of sleep apnea are signaled by snoring, that is generally followed by fatigue the next day. Because sleep apnea can trigger cardiovascular disease, hypertension and stroke is important to be discovered in time.
Investigation: The main test is polysomnography. It is a painless test that will monitor sleep patterns, changes in breathing and brain activity.



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