WikiBiomeThe human microbiome encyclopediaRanked matches across titles, topics, categories, and article introductions.
Mercury is the most toxic heavy metal with no known biological function. Its organic form -- methylmercury (MeHg) -- is the primary concern for dietary exposure via fish consumption. Mercury's toxicity centers on thiol group binding, glutathione depletion, and blood-bra…
Fish is the primary dietary source of methylmercury (MeHg) -- a potent neurotoxin that crosses the blood-brain barrier, depletes glutathione, and can increase amyloid-beta production and tau phosphorylation mercury. MeHg is 95-100% absorbed in the intestinal tract. An e…
The most common form of dementia, affecting an estimated 55 million people worldwide and projected to triple by 2050 zhang 2024 recent advances alzheimers mechanisms trials. Characterized by progressive memory loss, cognitive decline, amyloid-beta plaques, and neurofibr…
A metalloid that sits in the shadows of better-studied toxic metals like lead, cadmium, and mercury, yet appears with surprising consistency in metallomic studies of endocrine and inflammatory conditions. Antimony (symbol Sb, from Latin stibium; atomic number 51) exists…
This knowledge-base record is being expanded from WikiBiome’s evidence graph.
A neurodevelopmental condition affecting approximately 1 in 36 children (US CDC 2023 estimate), characterized by differences in social communication, restricted interests, and repetitive behaviors. From a metallomics perspective, ASD presents a compelling convergence of…
Bacterial vaginosis (BV) is the most common vaginal infection in women of reproductive age, affecting an estimated 29% of women globally. Rather than an infection by a single pathogen, BV represents a polymicrobial dysbiotic state -- a collapse of the protective Lactoba…
A selective semipermeable border formed by brain endothelial cells connected by tight junctions, pericytes, and astrocytic end-feet. The BBB restricts passage of most molecules from blood to brain, protecting the CNS from toxins, pathogens, and inflammatory mediators. M…
A progressive loss of kidney function affecting approximately 850 million people worldwide (10–14% of adults), causing 1.2 million deaths annually. CKD is unique among diseases in this wiki because it occupies both sides of the metal-disease equation: heavy metals (Cd, …
Depression is the most prevalent mental health disorder globally, affecting over 280 million people zhu 2025 microbiota gut brain axis depression review, and one of the most metal-sensitive conditions in this wiki. It sits at the convergence of nearly every pathway cata…
This page identifies the contradictions and clinical dilemmas that become visible only when the 236 source pages in this wiki are read together. Each paradox describes a situation where evidence-based dietary or supplementation advice -- advice that is correct for most …
The pathological disruption of normal metal homeostasis — the tightly regulated balance of essential trace elements (iron, zinc, copper, manganese, selenium, cobalt) and the effective exclusion of toxic metals (cadmium, lead, mercury, arsenic). Dyshomeostasis is a conve…
A genus of Gram-positive bacteria (primarily E. faecalis and E. faecium) that exemplifies the metal-antibiotic resistance co-selection crisis. Enterococci carry diverse metal tolerance genes for mercury, arsenic, copper, and cadmium on the same mobile genetic elements a…
This knowledge-base record is being expanded from WikiBiome’s evidence graph.
This knowledge-base record is being expanded from WikiBiome’s evidence graph.
Heavy metals exert some of their most devastating effects on the nervous system. lead, mercury, and arsenic are the three metals with the most extensively documented neurotoxic mechanisms, but cadmium, manganese, aluminum, and nickel also contribute to neurological dama…
The developing infant represents a uniquely vulnerable window for heavy metal toxicity. Three factors converge to make the first years of life a critical period: an immature and rapidly assembling gut microbiome, a developing blood-brain barrier, and proportionally high…
An essential halogen required for thyroid hormone synthesis (T3 and T4). The thyroid gland is the primary iodine-concentrating organ, containing 70-80% of total body iodine. Iodine occupies a unique position in the metallomics landscape: it is not a metal, but its inter…
A family of small (6-7 kDa), cysteine-rich proteins that bind heavy metals with extraordinary affinity. Metallothioneins (MTs) are the cell's primary chemical defense against metal toxicity -- they sequester cadmium, mercury, lead, and other toxic metals, preventing the…
Mitochondrial dysfunction refers to the impairment of mitochondrial energy production, redox balance, and signaling functions. Mitochondria are the primary targets of heavy metal toxicity in human cells, and they are also the organelles most dependent on metal cofactors…
Nuclear factor kappa-light-chain-enhancer of activated B cells (NF-kB) is a family of transcription factors that regulate inflammation, immune responses, cell survival, and proliferation. NF-kB is a convergence point where metal toxicity, pathogen signaling, and chronic…
Oxidative stress is the imbalance between the production of reactive oxygen and nitrogen species (ROS/RNS) and the capacity of biological antioxidant defense systems to detoxify them. It is the single most commonly invoked mechanism across metal toxicology in this wiki,…
This knowledge-base record is being expanded from WikiBiome’s evidence graph.
An essential trace element that is primarily protective in its biological roles. Unlike most metals in this wiki, selenium's toxicological significance lies more in the consequences of its deficiency than its excess. Selenium is the backbone of the selenoproteome -- a f…
Autoimmune thyroid diseases (AITDs) -- hashimotos thyroiditis and graves disease -- are the most common organ-specific autoimmune conditions, affecting 5-10% of the global population. The thyroid gland sits at a remarkable intersection of metal biology and immune regula…
Could counter Zn depletion, but excess Zn promotes A-beta aggregation in plaques doroszkiewicz 2023 common trace metals alzheimers parkinsons.