Zinc is a mineral that helps certain enzymes in the body carry out essential functions like breaking down nutrients, building DNA, and supporting immune responses.
Mechanism
Synthesis from 4 studies
Zinc is like a key that fits into special protein tools in your body, letting them work. These tools build DNA, make proteins, heal your gut and lungs, and stop viruses. Without zinc, the tools don’t work right, which slows growth and makes you more likely to get sick. Selenium helps too, by...
Most probable mechanism
Zinc helps special proteins in the body work properly by sticking to them and letting them do their jobs. These proteins help make DNA and proteins, break down food for energy, and fight off infections. When zinc is present, it turns on enzymes that build new cells, repair tissues, and stop viruses from multiplying. Without enough zinc, these processes slow down, which can lead to slower growth, weaker immunity, and digestive problems.
Zinc binds to and activates metalloenzymes involved in DNA and RNA synthesis, enabling cell division and tissue regeneration
Zinc acts as a cofactor for enzymes that regulate gene transcription, including those controlling immune cell development and function
Zinc stabilizes cell membranes and tight junctions in epithelial tissues, reducing permeability and preventing pathogen entry
Zinc inhibits viral replication enzymes, such as RNA-dependent RNA polymerase, limiting the spread of respiratory and enteric viruses
Zinc modulates signaling pathways in immune cells, including T-cell receptor expression and PI3K/Akt inhibition, to maintain functional quiescence and readiness for activation
Zinc supports insulin-like growth factor signaling and reduces systemic inflammation, redirecting energy toward growth and repair processes
Zinc enhances brush border enzyme activity in the intestinal epithelium, improving nutrient absorption and reducing osmotic fluid loss
Less supported by current evidence, but not ruled out
Selenium helps create special antioxidant proteins that reduce harmful molecules in cells, which improves how insulin works and helps immune cells stay ready to fight infections without getting tired.
Selenium is incorporated into selenoproteins such as glutathione peroxidase and selenoprotein P, which reduce oxidative stress and restore insulin signaling
Reduced oxidative stress downregulates lipogenic enzymes, leading to decreased fat storage and improved metabolic efficiency
Selenoproteins upregulate genes in T cells that enhance antiviral activity, including APOBEC3G and cytotoxic granule proteins
Evidence from Studies
Supporting (3)
Community contributions welcome
Efficacy of prophylactic intermittent zinc supplementation for reducing acute respiratory infections and diarrhoea in infants: A randomized controlled trial
Effects of Zinc Sulfate Supplementation on Cell-Mediated Immune Response in Head and Neck Cancer Patients Treated with Radiation Therapy
Gold Standard Evidence Needed
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