Definition of Protozoan:

Any one of a large group of one-celled (unicellular) animals, including amoebas.  They are microorganisms that differ from bacteria in that they are larger and possess a nucleus surrounded by a membrane.  Several species of protozoa can be transmitted through water and cause disease in humans, including Giardia, Cryptosporidium, Cyclospora, Entamoeba and Isospora.  One distinguishing characteristic of protozoa is that when released from the human body through feces they are present in an encysted (dormant) form.  These cysts have a protective layer that surrounds them and keeps chemicals from penetrating them.  Therefore, chlorine disinfection does not kill the protozoan cysts.

Also: Protozoa

Topics Related to Protozoan


...the condition
“...Babesiosis is a malaria-like illness caused by a protozoan parasite (Babesia microti in the U.S.; other members of the Babesia genus in Europe) that invades red blood cells, and is primarily transmitted by the deer tick Ixodes scapularis and...”

Bayberry a treatment
“...Bayberry root bark contains an antibiotic chemical (myricitrin), which some believe to be effective against a broad range of bacteria and protozoa.  Myricitrin's antibiotic action supports bayberry's traditional use against diarrhea and dysentery...”
Diagnose your symptoms now!
  • understand what's happening to your body
  • see your health summarized and in detail
  • have a doctor review your case (optional)

More topics Related to Protozoan

Blastocystosis (Blastocystis hominis)

...the condition
“...Blastocystis hominis is a protozoan microorganism which may or may not cause disease in people...”


...related topic
“An inflammatory disorder of the lower intestinal tract, usually caused by a bacterial, parasitic, or protozoan infection and resulting in pain, fever, and severe diarrhea, often accompanied by the passage of blood and mucus.”

Female Hair Loss

...the condition
“...Common causes of hair loss or hair thinning in women ... local viral, fungal, or protozoan infection...”


...related topic
“An intestinal tract infection caused by Giardia lamblia, a flagellate protozoa now common to much of the world...”

Giardiasis Infection

...the condition
“Giardiasis is a diarrheal illness caused by Giardia intestinalis (also known as Giardia lamblia), a one-celled, microscopic protozoan parasite that lives in the intestine of people and animals...”

Grapefruit Seed Extract a treatment
“...Highly active against protozoa, bacteria, yeast and some viruses, it has been used for quite some time in the treatment of parasitic infections...”
Concerned or curious about your health?  Try The Analyst™
Symptom Entry
Symptom Entry
Full Explanations
Optional Doctor Review
Review (optional)

More topics Related to Protozoan

Hemolytic Anemia

...the condition
“...Infectious Hemolytic Anemia is due to an incompletely compensated decrease in red blood cell survival secondary to infectious agents, including protozoa (e.g., Plasmodium in malaria), bacteria, and certain viruses...”

Natural Killer Cells

...related topic
“An important first line of defense against newly arising malignant cells and cells infected with viruses, bacteria, and protozoa.  They form a distinct group of lymphocytes with no immunological memory and are independent of the adaptive immune system...”

Parasite Infection

...the condition
“...There are four different groups to choose from: roundworms, single celled protozoa, tapeworms and flukes...”
...recommendation Wormwood
“Artemisia annua has primarily been used for treatment of protozoan infection...”


...related topic
“Trichomoniasis is a sexually-transmitted infection caused by the single-cell protozoan parasite Trichomonas vaginalis...”

Vaginitis/Vaginal Infection

...the condition
“...It is caused by a single-celled protozoan parasite called Trichomonas vaginalis...”


...the condition
“...Drugs, complement deficiencies, viral, bacterial and protozoan infections have all been implicated...”
Report by The Analyst™
Click to see sample report
Health problems rarely occur in isolation or for obvious reasons

Your body is a highly complex, interconnected system.  Instead of guessing at what might be wrong, let us help you discover what is really going on inside your body based on the many clues it is giving.

Our multiple symptom checker provides in-depth health analysis by The Analyst™ with full explanations, recommendations and (optionally) doctors available for case review and answering your specific questions.

We use cookies for traffic analysis, advertising, and to provide the best user experience