When should you see a doctor for parasitic concerns?

You should see a doctor if you find worms in your stool, experience unexplained weight loss, or have persistent symptoms like sickness or diarrhoea.

Parasite Cleanses Are Exploding on TikTok: Doctors Say Most People Don't Need Them

Q: What are parasite cleanses?

Parasite cleanses are herbal supplements or programmes that claim to remove parasites and improve gut health, but lack solid clinical evidence for effectiveness.

Q: How do parasitic infections occur?

Parasitic infections can occur through swallowing contaminated food or water, contact with infected faeces, or skin penetration by parasites like hookworms.

Q: Can natural cleanses be harmful?

Yes, natural cleanses can interact with medicines, cause side effects, and lead to inadequate nutrient intake or delay proper diagnosis.

Parasite cleanses are having a moment on social media, with TikTok and Instagram users claiming that hidden worms or other parasites could be behind common problems such as bloating, fatigue, poor sleep, mood changes and skin issues.

The trend gained attention after supermodel Heidi Klum revealed that she and her husband, Tom Kaulitz, were undertaking a parasite cleanse because 'everything' on her Instagram feed was about worms and parasites. Klum said the cleanse contained 'all these herbs'.

But there is a crucial distinction between a genuine parasitic infection and the herbal 'deworming' products now flooding social media.

Parasites Are Real

Parasitic infections are a genuine global health concern. The World Health Organisation (WHO) estimates that about 1.5 billion people, or 24% of the world's population, are infected with soil-transmitted worms such as roundworms, whipworms and hookworms.

These infections are particularly concentrated in tropical and subtropical areas where access to clean water, sanitation and hygiene is limited.

However, this does not mean that unexplained tiredness, bloating or poor sleep is evidence of a parasite. Risk depends on the specific organism and a person's circumstances, including where they live or have travelled, exposure to contaminated food or water, contact with infected faeces and, for some worms, contact with contaminated soil.

How Do Parasitic Infections Happen?

People can acquire intestinal parasites in several ways. Some are transmitted by swallowing contaminated food or water, while others spread when microscopic eggs or organisms from infected faeces enter the mouth.

Hookworms, for example, can penetrate the skin when someone walks barefoot on contaminated soil. Threadworms, meanwhile, are common in the UK and spread when microscopic eggs are swallowed after being transferred from contaminated fingers, surfaces, bedding or clothing.

Symptoms vary according to the parasite. They can include diarrhoea, nausea, vomiting, abdominal pain, loss of appetite, unexplained weight loss, skin irritation and itching around the anus. Some infections can also cause few or no symptoms.

What Are Parasite Cleanses?

The products promoted online are usually herbal supplements or programmes combining several supplements with restrictive dietary rules. Ingredients can include wormwood, clove, black walnut, goldenseal and other plant extracts.

Influencers may claim these products can remove parasites, improve gut health or eliminate toxins. But experts say there is no solid clinical evidence that these commercial cleanses are effective or necessary for people without a diagnosed infection.

This is important because genuine parasitic infections are diagnosed and treated according to the organism involved. Testing can include stool samples or blood tests, while treatment may involve specific antiparasitic or antibiotic medicines.

Can 'Natural' Cleanses Be Harmful?

Natural does not automatically mean safe. Some herbal products can interact with medicines or cause side effects, while combinations containing laxatives may cause diarrhoea, dehydration and electrolyte disturbances. Restrictive diets can also lead to inadequate nutrient intake.

Self-treatment can create another problem: delaying a proper diagnosis. Symptoms such as fatigue, bloating or changes in bowel habits can have numerous causes, and assuming they are due to parasites may mean the real problem goes untreated.

When Should You See a Doctor?

People with a plausible exposure or persistent symptoms should seek medical advice rather than relying on a social-media cleanse.

The NHS advises speaking to a GP if you find a large worm, part of a worm or worm eggs in your stool, develop unexplained weight loss, or have sickness, diarrhoea or stomach pain lasting more than two weeks. Recent travel can also be important when assessing the possibility of a parasitic infection.

The Heidi Klum-inspired trend may have made parasites a fashionable wellness topic, but the medical reality is straightforward: parasites are real, but herbal cleanses are not a substitute for testing and evidence-based treatment.