In-depth, evidence-based guides on gut health — what the research actually supports, where the evidence is weak, and what to do next. Every material claim is linked to a primary or authoritative source.
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How to Test for Intestinal Parasites: What Works, What Doesn’t, and What to Ask For
There is no single test for parasites. A guide to stool O and P, antigen tests, PCR panels, the tape test and Strongyloides serology,…
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Heavy Metal Testing: Which Tests Are Valid and Which Are Not
Hair mineral analysis and provoked urine testing are not validated for diagnosing metal toxicity. Here is what the evidence supports, which specimen is right…
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Can Probiotics Cause Bloating? What to Do If You Feel Worse
Probiotics can sometimes cause gas or bloating. Learn what may be happening, when to stop, warning signs, and how to evaluate the product you…
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Bloating, Fatigue, and Brain Fog: What Your Symptoms Can—and Cannot—Tell You
Editorial status: Evidence reviewed July 27, 2026. Not medically reviewed. Bloating, fatigue, and difficulty concentrating are real symptoms. They can also be frustratingly nonspecific.…
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Do Parasite Cleanses Work? Evidence, Testing, and Safer Next Steps
Editorial status: Evidence reviewed July 27, 2026. Not medically reviewed. Online “parasite cleanse” programs often combine wormwood, black walnut, cloves, laxatives, restrictive diets, and…
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Zeolite vs. Chlorella vs. Cilantro: What Does the Evidence Show?
Editorial status: Evidence reviewed 27 July 2026. Not medically reviewed. If you search for ways to “detox” heavy metals, three names appear repeatedly: zeolite,…
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How to Choose a Probiotic: Strains, CFUs, Labels, and Safety
Editorial status: Evidence reviewed 27 July 2026. Not medically reviewed. The “best probiotic” is not necessarily the bottle with the most strains, the highest…
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Parasites, Heavy Metals, and the Gut Microbiome: What Science Actually Shows
Editorial status: Evidence reviewed July 27, 2026. Not medically reviewed. Parasites, heavy metals, and the gut microbiome can interact. That scientifically interesting statement is…