Parasites are microorganisms such as worms, single-celled organisms, or protozoa that inhabit the human body and feed off it often without being noticed. They most commonly affect the intestines but can also invade other organs, where they may cause chronic symptoms. Despite the high standard of living in Western countries, parasitic infections are still relatively common.
Symptomes
A parasitic infection can cause a variety of symptoms, often subtle and difficult to trace back to a single source. Common signs include digestive issues such as bloating, abdominal pain, diarrhea, or constipation. Many people also experience persistent fatigue, trouble sleeping, difficulty concentrating (often called brain fog), or skin problems like eczema and acne.
As parasites irritate and weaken the intestinal lining, nutrient deficiencies, a weakened immune system, and chronic inflammation may develop. Strong food cravings, especially for sweets, can also occur since many parasites feed on sugar.
Causes
The most common ways parasites spread include contaminated drinking water, undercooked meat, raw fruits or vegetables, and close contact with animals. While the risk is higher in countries with lower hygiene standards, infections can also occur in Central Europe, for example through contaminated food or poor kitchen hygiene.
A weakened immune system, a leaky gut, or an imbalanced microbiome can create ideal conditions for parasites to thrive. Repeated use of antibiotics and chronic stress may further weaken the body’s natural defenses, making infections more likely.
Diagnosis
For reliable diagnosis, a modern stool PCR test is recommended, as it can detect even the smallest traces of parasitic DNA, even in the absence of acute symptoms. Traditional microscopic examinations are often unreliable because parasites are not excreted continuously. Highly sensitive tests of this kind are now also available online and can easily be carried out at home. A targeted medical history, including factors such as travel history, diet, and contact with animals provides valuable additional information for accurate diagnosis.
Therapy
Treatment should be personalized and holistic. Conventional medicine often uses antiparasitic drugs such as albendazole, mebendazole, or metronidazole. In addition or as an alternative, herbal remedies can be used, including wormwood, black walnut, cloves, berberine, oregano oil, and papaya seeds. Studies (e.g., Koshy et al., 2020) have confirmed their effectiveness against various types of parasites.
A key component of therapy is nutrition. The diet should be low in sugar, rich in bitter compounds, and anti-inflammatory. Bitter substances strengthen the digestive organs and make it harder for parasites to survive. Supportive measures may include probiotics, binding agents such as zeolite or activated charcoal, and detoxification support for the liver, lymphatic system, and kidneys.
