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Holistic & AlternativeOctober 11, 2026· MK Wellness· 8 min read· Part of the Holistic & Alternative guide →
Parasite Cleanses: Why Functional Practitioners Say Parasites Are Overlooked, the Herbs With Research, and What to Know
Functional practitioners like Ann Louise Gittleman and Dr. Amy Myers say parasites are a missed piece of the puzzle behind gut trouble, fatigue, and skin issues. Here's why people cleanse, the herbs with real research behind them, how to test, and the safety facts.
MK Wellness InsightsFounded by Danielle Cordova, Cypress, TX
On this page (8 sections)
Parasites aren't just a problem in faraway places. About 13% of Americans tested in national health surveys carry antibodies to Toxoplasma, a parasite spread by cats and undercooked meat, and functional practitioners believe gut parasites are a commonly missed piece of the puzzle behind bloating, fatigue, skin problems, and cravings.
Here's why people do parasite cleanses, what functional practitioners say, which herbs have research behind them, and what to know before you start.
At a glance
Research stageEmerging
Early human data: small studies, case series, clinic data.
What it is
Herbal programs to clear intestinal parasites, often with wormwood, black walnut, clove, oregano oil, and papaya or pumpkin seeds, plus diet changes and support for the gut, liver, and lymph.
Why people choose it
Functional practitioners like Ann Louise Gittleman and Dr. Amy Myers believe parasites are a common, overlooked cause of digestive trouble, fatigue, skin problems, and cravings, and many people feel better after a cleanse.
What the research shows
Papaya seeds cleared parasites in 77% of children in a randomized study, and pumpkin seeds with an herbal extract expelled tapeworms in 89% of confirmed cases. Oregano oil cleared several gut parasites in a small study.
Know first
A stool test shows what’s really there. Wormwood can be toxic in large amounts, and cleanses aren’t for pregnancy, breastfeeding, or children without a practitioner’s guidance.
Where to get it: Herbal cleanse kits are sold online and through practitioners. Functional practitioners can order comprehensive stool tests.
What It Is
A parasite cleanse is a program of anti-parasitic herbs, usually with diet changes and gut support, meant to clear intestinal parasites like worms and single-celled organisms (protozoa). Common ingredients include wormwood, black walnut hull, clove, oregano oil, garlic, berberine-containing herbs like goldenseal, papaya seeds, pumpkin seeds, and mimosa pudica seed. Many programs also include binders and support for the body's drainage pathways: the bowels, liver, and lymph.
Why Functional Practitioners Say Parasites Are Overlooked
- Ann Louise Gittleman, PhD, CNS, a nutritionist and former chief nutritionist at Bellevue Hospital, has written about parasites for more than three decades. Her book Guess What Came to Dinner? Parasites and Your Health is a classic on the topic, and she calls parasites a "missing diagnosis" behind many chronic symptoms (Gittleman).
- Dr. Amy Myers, MD, a functional medicine physician and two-time New York Times bestselling author, writes that "the idea that intestinal parasites only exist in underdeveloped countries is a myth." She saw parasites often in her thyroid and autoimmune patients, prefers comprehensive stool testing, and combines prescription and natural treatments (Myers).
- Dr. Jay Davidson and Dr. Todd Watts, co-founders of Microbe Formulas, teach that parasites become more active around the full moon, and many people time their cleanses to it.
Their shared reasoning:
- Parasites spread easily, through food, water, pets, soil, and travel.
- Symptoms are easy to miss: bloating, gas, irregular stools, fatigue, skin issues, teeth grinding, trouble sleeping, anemia, and appetite changes are signs Dr. Myers lists.
- Standard tests can miss them, so functional practitioners often use comprehensive stool tests.
- The terrain is the best defense: strong digestion, a healthy microbiome, and real food make the body a poor host.
What the Research Shows
77%of children with intestinal parasites cleared them with dried papaya seeds and honey, compared with 17% on honey aloneJournal of Medicinal Food, 2007
89%of confirmed tapeworm cases expelled whole tapeworms with pumpkin seeds and areca nut extractActa Tropica, 2012
13%of Americans tested carried antibodies to Toxoplasma, a parasite spread by cats and undercooked meatParasitology International, 2020
- Parasites in the U.S.: in national survey data from 2009 to 2014, 13.3% of Americans tested positive for antibodies to Toxoplasma, and the odds rose with age (Parasitology International, 2020).
- Parasites and gut symptoms: in a review of 32 studies, people with Blastocystis, a common gut parasite, were more likely to have irritable bowel syndrome (IBS). In long-term studies, Giardia infection was linked to more than five times the odds of developing IBS (Microbial Pathogenesis, 2022).
- Papaya seeds: in a randomized study of 60 children in Nigeria with intestinal parasites, 23 of 30 (77%) who took dried papaya seeds with honey had parasite-free stools a week later, compared with 5 of 30 (17%) who took honey alone, with no harmful effects (Journal of Medicinal Food, 2007).
- Pumpkin seeds: in a community study in China, pumpkin seeds combined with areca nut extract expelled whole tapeworms in 40 of 45 confirmed cases (89%), most within three hours. Pumpkin seeds alone worked in 9 of 12 confirmed cases, more slowly. Mild, passing nausea and dizziness were common (Acta Tropica, 2012).
- Oregano oil: in a small study of 14 adults with gut parasites, emulsified oregano oil cleared Entamoeba hartmanni in all 4 people who had it, Endolimax nana in 1, and Blastocystis in 8, and gut symptoms improved in 7 of the 11 people with Blastocystis (Phytotherapy Research, 2000).
- Plants against parasites, recognized: the 2015 Nobel Prize in Physiology or Medicine honored two anti-parasite discoveries: avermectin, the parent of ivermectin, and artemisinin, which Tu Youyou found in sweet wormwood by drawing on ancient Chinese medical texts. Artemisinin is now a frontline malaria treatment (NobelPrize.org). Cleanse formulas usually use common wormwood, a related plant.
What to Know Before You Start
Know first
- Test first. A comprehensive stool test through a functional practitioner, or a standard ova and parasite test, shows what's really there. Parasites shed on and off, so you may need more than one sample.
- Wormwood is strong. It contains thujone, which can be toxic in large amounts. A man who drank wormwood oil bought online developed kidney failure (New England Journal of Medicine, 1997). Use products made for people, as your practitioner directs.
- Don't use areca (betel) nut on your own. Chewing it regularly is linked to mouth cancer.
- Not for pregnancy or breastfeeding, and not for children without a practitioner's guidance.
- Some people feel worse before they feel better. Practitioners often support the bowels, liver, and lymph during a cleanse to ease these "die-off" symptoms.
- Check your medicines. Some herbs interact with medicines: berberine can lower blood sugar, and garlic can add to the effect of blood thinners. Ask your pharmacist.
- Confirmed infections have options. Prescription anti-parasitic medicines exist, and some functional doctors, like Dr. Myers, combine them with natural support.
We don't share doses or protocols. A practitioner who uses cleanses can guide you.
How to Find a Practitioner
Functional medicine doctors, naturopaths, and nutrition practitioners who work with gut health can test you and guide a cleanse. The Natural Health Network directory can help you find holistic practitioners near you.
Questions to ask
- Which stool test do you recommend, and what will it show?
- If we find something, would you use herbs, a prescription, or both?
- How will we support my gut, liver, and drainage during the cleanse?
- Do any of these herbs interact with my medicines or health conditions?
- How will we know it worked?
Common Questions
Should everyone do a cleanse? Practitioners differ. Some recommend cleansing periodically, while others prefer to test first and treat what they find. Talk it through with your practitioner.
Why the full moon? Dr. Davidson and Dr. Watts teach that parasites are more active around the full moon, when they believe melatonin drops and serotonin rises. This comes from their clinical experience.
What about pets? Pets can carry parasites. Keep them on a deworming plan with your vet, and wash your hands after handling litter or cleaning up after them.
Do you offer cleanses at MK? No, but our detox and lymphatic therapies support the same drainage pathways practitioners focus on during a cleanse.
How This Fits at MK Wellness
We support the body's drainage pathways with gentle therapies:
- The infrared sauna for a deep, cleansing sweat
- The lymphatic roller and compression boots to keep lymph moving
- The Gut Health guide and The Gut-Immune Connection
Go Deeper
- Guess What Came to Dinner? Parasites and Your Health, by Ann Louise Gittleman
- Intestinal Parasites: Signs You May Have One, by Dr. Amy Myers
- Our guides to ivermectin and fenbendazole
- Holistic Therapies: The Basics, and every holistic and alternative guide
MK Wellness services are non-medical and not intended to diagnose, treat, cure, or prevent any condition. This article is general education, not medical advice, and deliberately includes no doses or protocols. Talk with your practitioner before starting a cleanse, especially if you're pregnant or breastfeeding, have a health condition, or take medication.
Put This Into Practice
The Detox & Lymphatic Support Protocol at MK Wellness
We build this goal around modalities that work better together. The core of the protocol:
About MK Wellness
MK Wellness was founded by Danielle Cordova after years of searching for real answers for her own family. Our Insights follow The MK Way: root cause over symptoms, the whole body as one system, and honest reporting on what the evidence does and doesn't show. This article is for general education, not medical advice.
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