Could a past infection with the Giardia parasite be the cause of your persistent chronic fatigue syndrome? While it may seem far-fetched that common parasites could be extreme fatigue causes, that’s exactly what new research has discovered. Giardia is a common intestinal parasite which previously was thought to be responsible for mainly uncomplicated infections characterized by diarrhea. These parasites are now considered capable of being extreme fatigue causes. They can lead to chronic fatigue syndrome that may persist as long as five years after the infection, according to Norwegian researchers who published their findings in the medical journal BMC Gastroenterology.[1]

What is the Giardia parasite?—It’s more common than you probably think!

Giardiasis is an infection of the small bowel that occurs as a result of ingesting cysts of the Giardia parasite, which is the most common intestinal parasite in the U.S and exists around the world. The parasite symptoms usually start within a few weeks after drinking contaminated water, swimming in contaminated water, or consuming food washed in contaminated water or prepared by an infected person.

Travel to Eastern Europe (particularly Russia), India, East and West Africa, and parts of the Middle East is associated with giardiasis. Children in day care centers and people in institutions are common carriers of the Giardia parasite. Campers, backpackers, and people recreating in rivers and streams are all at increased risk. So are people with low stomach acid, such as users of proton pump inhibitors for GERD and acid reflux. Recently, almost 2% of samples of ready-to-eat, packaged leafy greens from the U.S., Mexico, and Canada, was found to be contaminated with Giardia.[2]

Common Parasite Symptoms:

Around 75%-80% of infected people develop parasite symptoms, while the rest remain symptom-free but can still pass on the infection. Acute, profuse, watery diarrhea is the most common complaint of those who do suffer Giardia parasite symptoms. Other parasite symptoms include bloating, abdominal pain, and gas. In 20% to 40% of cases, giardiasis can lead to short-term lactose intolerance. It may also trigger the onset of irritable bowel syndrome.  

Treating Parasite Symptoms:

The infection may be short-lived and go away on its own, in which case no treatment is recommended. If diagnosed (usually with a stool sample), Giardia parasite infection is commonly treated with antimicrobial drugs, such as metronidazole, which are up to 90% effective. In some people, such as those with compromised immune systems, the infection can be difficult to treat and become chronic.

Giardia parasite infections as extreme fatigue causes—what is the link between these parasites and chronic fatigue syndrome?

The Norwegian study is the second follow-up study after contaminated water caused a large giardiasis outbreak in a small town in Norway. The first study, conducted three years after the outbreak, showed an elevated risk of both chronic fatigue syndrome and irritable bowel syndrome (IBS).[3] The five-year follow up study did not address IBS, but it did find that the parasites were not only extreme fatigue causes, they seemed to cause obstructive sleep apnea, depression, and anxiety. Rates of all these disorders, in addition to chronic fatigue syndrome (and unexplained chronic fatigue not meeting the criteria for chronic fatigue syndrome) were at higher levels than in the healthy population.[1] Chronic fatigue syndrome was the most commonly identified diagnosis in all the patients still suffering fatigue five years after the Giardia parasite exposure, however.

Parasites are only one of many extreme fatigue causes. What could be causing your chronic fatigue and what can you do about it?

Do you have a history of being diagnosed with the Giardia parasite and now suffer from chronic fatigue? There could be a link, and working on your gastrointestinal health with integrative and natural therapies could be a path towards finally regaining your energy. We’ll discuss both conventional and natural healing for parasites in a future article. Of course, Giardia parasite infections are by no means the only extreme fatigue causes. Most researchers agree that chronic fatigue syndrome is the result of multiple causes and triggers. For example, certain viruses can trigger chronic fatigue, as can nutritional deficiencies, such as iron deficiency. Leaky gut syndrome and adrenal gland exhaustion are also chronic fatigue triggers. If you are sick and tired of being tired and would like more information on these extreme fatigue causes as well as safe and effective natural therapies for boosting your energy, see our Fatigue, Lack of Energy articles now.

[1] BMC Gastroenterol. 2013 Feb 12;13(1):28.

[2] J Food Prot. 2013 Feb;76(2):307-13.

[3] Gut. 2012 Feb;61(2):214-9.

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