Symptoms of Intestinal Parasites & a Functional Approach
Parasites live off their hosts to survive. Some cause no symptoms at all — others sit quietly beneath years of unexplained digestive trouble.
Parasites are organisms that infect the body of another living being and live off their hosts to survive. A parasitic infection occurs when they grow, reproduce or invade organ systems in a way that makes their host unwell. Common examples include worms such as roundworm and pinworm, along with toxoplasmosis, giardiasis, cryptosporidiosis and trichomoniasis.
How they are picked up
Most parasites come from consuming food or water that has been contaminated. Travelling abroad can also expose you to tropical parasites, and raw or undercooked meat and seafood are recognised routes of transmission.
Symptoms to pay attention to
Depending on the organism and the body system affected, signs can include:
- Stomach pain and cramping, nausea, vomiting or an upset stomach
- Diarrhoea, constipation, gas and dehydration
- Unexplained weight loss
- Fever, flu-like symptoms and swollen lymph nodes
- General aches and pains
- Itching, redness and skin irritation
Symptoms rarely announce themselves clearly. Patterns over time tell us far more than any single complaint.
What a parasite cleanse involves
The key to a parasite cleanse is avoiding refined sugars, grains and processed foods that parasites feed on, boosting fibre intake to support elimination, and getting good nutrients in to build immune resilience. Garlic, honey, pumpkin seeds and papaya seeds are traditionally included, while tap water and raw or undercooked meat and seafood are avoided.
Many stubborn parasites require a tailored approach targeted to the exact organisms, based on detailed microbiome and systemic testing — not a generic protocol bought off a shelf.
How Sarah can help
Sarah begins with a long, unhurried consultation covering your symptoms, timeline, travel history, diet and what has already been investigated medically. Where it genuinely adds something, she may discuss NutriPATH functional pathology including Complete Microbiome Mapping, which can look at parasites, fungi, bacterial pathogens and H. pylori alongside functional digestive markers.
From there she dispenses a practitioner-only herbal formula made for you from her Beaconsfield apothecary, paces the food and lifestyle changes so they are liveable, and focuses on rebuilding digestive and immune resilience afterwards. She will always encourage collaboration with your medical practitioner where appropriate.
Read the broader overview in Parasites, Yeast and Unwanted Gut Bacteria, or book a consultation.
Common questions
What are the most common signs of intestinal parasites?
Reported signs include stomach pain and cramping, nausea, vomiting, dehydration, weight loss, fever, gas, diarrhoea, constipation, an upset stomach, flu-like symptoms, swollen lymph nodes, aches and pains, and skin itching, redness or irritation. Some parasites cause no symptoms at all.
How do people pick up parasites?
Most commonly through contaminated food or water. Travel abroad can also expose you to tropical parasites, and raw or undercooked meat and seafood are recognised routes.
What does a parasite cleanse involve?
The foundations are avoiding refined sugars, grains and processed foods that feed parasites, increasing fibre to support elimination, and improving nutrient intake to build immune resilience. Foods such as garlic, honey, pumpkin seeds and papaya seeds are often included. Beyond that, many organisms need a targeted, practitioner-led protocol.
Do I need testing first?
Speak with a medical practitioner before beginning any cleanse. Where clinically relevant, Sarah may discuss comprehensive microbiome and systemic testing through NutriPATH so that any approach is targeted to what is actually present.
General education only, not intended to diagnose, treat, cure or prevent disease. Always speak with a medical practitioner before beginning any cleanse.