Causes of Fatigue

What are the causes of fatigue?

Fatigue is a feeling of tiredness, exhaustion, lack of energy, poor sleep, worry and lack of exercise.

You may even feel overworked which can leave you feeling fatigued.

Having a cold, flu, mononeucleosis, or any illness can leave you feeling worn out but this feeling will go away when your symptoms clear up.

Of course stress is a major issue but when the stress clears up so will your fatigue.

Many prescription and non-prescription medications can cause fatigue and weakness and so can caffeine, alcohol and drugs.

A visit to your doctor is needed to determine if the causes of fatigue are a result of something else.

Sometimes fatigue can be associated with more serious health issues such as:


If your in your reproductive years and have heavy menstrual cycles, fibroid tumors or uterine polyps or recently gave birth-the blood loss may have caused you to develop anemia.

Bleeding leads to a lack of hemoglobin, the iron rich protein in red blood cells that carries oxygen from the lungs to other parts of the body which ultimately cause you to feel fatigue.

To confirm your anemia a trip to your physician is needed.

Underactive Thyroid

If you feel sluggish, run down and even a little depressed you may have an underactive thyroid also known as hypothyroidism.

Your thyroid sits at the base of your neck and controls your metabolism.

Hypothyroidism is the process where they body destroys the cells responsible for producing thyrozin and other hormones secreted by the thyroid gland.

Your doctor will do blood tests to determine if this is the cause of your fatigue and if so will prescribe synthetic hormones.

Urinary Tract Infection (UTI)

When I think of urinary tract infections, I also think of the burning that goes with it.

But in some cases, fatigue may be your only clue.

UTI's are caused when bacteria enters the urinary tract. Often due to improper hygiene or sexual intercourse which can push bacteria from the vagina to the urethra.

If your doctor suspects you have a UTI your urine will be checked. If the tests are positive usually antibiotics are given to alleviate the symptoms.

Caffeine Overload

It's not unusual to see people grab coffee or colas for the quick energy burst. For some women the opposite can happen.

Caffeine will rob you of your B Vitamins and leave you feeling fatigued and adding more caffeine can leave you feeling worse. So back off of the caffeine if your feeling really tired.

Food Allergies

Causes of fatigue can also be attributed to food allergies. While food gives us energy some foods can take our energy away if we have an intolerance to them or an allergy.

If you suspect a food makes you sleepy, start with an elimination diet cutting out the foods that cause you to feel sleepy.

You can also speak with your doctor about an allergy test or a Registered Holistic Nutritionist to have the allergy eliminated.

Sleep Apnea

Of course, sleep is very important to feeling rested and nothing can replace rest. So if your not getting enough rest it stands to reason why your tired.

What if you don't know that your not getting enough rest? It could be sleep apnea-a condition where you stop breathing many times during the night.

Each time you stop breathing you awaken just long enough to disrupt your sleep cycle of course without being aware of it. The only thing you know is that you feel tired.

If you have sleep apnea you may be advised to lose weight and quitting smoking.

Left untreated, sleep apnea can cause an increase in your risk of heart disease and stroke.
For information on how to beat fatigue click here

Return from Causes of Fatigue to Homepage