Organisms Inside You – Part 1: Blastocystis hominis

Organisms Inside You - Part 1: Blastocystis hominis

Blastocystis is a genus of single-celled protozoan, which its colonization in most cases is asymptomatic. The intestinal colonization of hominis is somewhat common because of the low host specificity of the protozoan.1  Colonization rates differ between developed (10%) and less developed (50%) countries, and it seems to infect people more frequently who work and live with animals.2

Most people with adequate immune systems are asymptomatic carriers. There is much debate in the scientific community if Blastocystis hominis even cause infections in humans or if it is a commensal protozoan. Blastocystosis is an opportunistic infection of the protozoan that can rarely occur. Symptoms of blastocytosis mimic other gastrointestinal illnesses and include:3 4 5

  • Abdominal pain
  • Constipation
  • Diarrhea
  • Fatigue
  • Flatulence
  • Weight loss
  • Food allergies
  • Intestinal inflammation
  • Skin rashes
  • Headaches
  • IBS
  • IBD

Blastocystosis might occur because of an infection of a different more unknown opportunistic strain of Blastocystis. Researchers for the longest time have mislabeled other infectious Blastocystis strains as being Blastocystis hominis, therefore, we might not know which strains are truly causing the infection. Blastocystis hominis could be mostly harmless for all we know, and another strain could be causing all the opportunistic infections.6 7 8

Diagnosis of infection requires a microscoped ova and parasite stool culture and PCR testing.9 10 Only using direct microscopy can lead to misdiagnosis because:11

  1. Amount of shedding microogranisms through stool differ from day to day. You might a less or more serious infection depending on the amount shed on certain days.
  2. Blastocystis may resemble fat cells or white blood cells, which can make detection difficult using microscopes.
  3. Through microscope analysis different strains of Blastocystis can be hard to identify.

PCR testing is more effective and should be used in combination with a stool culture for an accurate diagnosis.

Blastocystis Protocol

  1. Hi John, do you think Allinia would be an effective treatment on it’s own, or do you believe it is necessary to take Allinia, Secnidazole, Diloxanide Furoate as a combination? I’m concerned more antibiotics means more side effects. Thank you in advanced!

  2. I am currently dealing with Blastocystis Hominis – picked it up in Roatan Honduras. Have done numerous parasite cleanses, pro and prebiotics and diet changes – eliminated fruit, any type of sugar, grains – alcohol. None of this has worked. I am wondering what protocol and diet is most currently being recommended.

  3. My doctor from a Hospital Tropical Meds Department has prescribed 600mg Emulsified Oregano Oil divided TID x 1 month ( with meals) as well as Florastor (Saccharomyces Boulardii) BID x 1 month. I am four days into this protocol. I had three stool samples with numerous blastocystis hominis in each one. I have tested positive for this several times. In previous years I have been given diodiquin for 21 days with no followup and metronidazole with no followup. On these occasions both doctors thought that it was harmless. However, since that time I have suffered with terrible gastro problems, nausea that puts me in the hospital. I have had every kind of gastro test that shows nothing wrong. I have been on PPI for years and am now trying to get off them. I will let you know if I have positive results from the Oil of Oregan/Saccharomyces Boulardii protocol.

    • Hi Pam, Would you report if the emulsified oregano oil and the florastor protocol you mentioned has worked for you with the blasto.

  4. Hello, I have severe candida overgrowth in addition to blasto. Can/should I follow the candida protocol simultaneously with this? Are there supplements interactions?
    Thank you for all your help.

    • Not any interactions that I know of except absorption of any supplement will be increase with Bioperine and should be taken separately from other supplements.

  5. What is the success rate of this protocol? How long it should be followed?

    I’m just doing some research on blastos as I have had pretty bad digestion for last 3-4 years and July las year these guys got detected in a stool test. I had an antibiotic treatment with Secnidazole (400mg) and Diloxanide Furoate (500mg) but despite 85% success rate those meds should have the symptoms returned in a month or so and I took another stool test just recently to confirm that they are still present. Now I’m supposed to start another course with tree different antibiotics simultaneously – two are the same as before.

    Just came across this article as well:

    The quoted study itself can be read from here:

    I would like to try this befor hitting my body with another round of antibiotics but it seems that it’s nearly impossible to find this root bark for sale anywhere.

    • So far I had one person that I was coaching that tried it with a mild – moderate case. He was able to obtain complete remission in two – three months. Every B Hominis case is very unique because of the uncertainty of the parasite.

  6. Hey,

    Your Protocol for eliminating Blasto will NOT work on evryone.
    Why, been there and done that. Suffered sever pain and dysfunction since 2007 until Nov 2013 and still sick due to the mega infusions of antibiotics.

    Had to follow Protocol as outlined by CDD, Prof Thomas Borody Sydney Australia.
    Undertook phase 1 and then Phase 2 as phase 1 did not work, only wiped out Fragilis.

    These drugs made me incredibly sick for one and a half years until now.
    Now I have no microbiome and need a FMT which will happen in 3 weeks.

    Blasto is a nightmare to eradicate, best left to the Xperts

    I appreciate your thoughts



    • You are correct that it may not work in everyone. I have had success in a recent client of mine who had complete eradication with no need of medication. Everyone is different.

    • Have you had the Fmt, did it work.

    • Hi Are you now cured? Can you post an update please? I am searching for a cure.

    • Hey silvo, how are you doing now? Did you do the FMT? Did the tripple antibiotics help you? Would really like to know about your current status.

  7. Regarding the protocols, do you choose just one, or should they be used concurremtly?

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