In a group of 100 adults in Brazil, every urine sample contained detectable levels of Bisphenol A (BPA), with an average concentration of 0.86 nanograms per milliliter, suggesting widespread...
Mechanism
Synthesis from 1 study
Everyone is exposed to tiny amounts of BPA every day from things like food containers and receipts. The body absorbs it, doesn’t break it down much, and flushes it out through urine — which is why it shows up in everyone’s pee, even if only in very small amounts.
Most probable mechanism
Every day, people take in tiny amounts of BPA from food, drinks, and packaging, and their bodies absorb it into the bloodstream. The liver processes it slightly, but most of it stays unchanged and gets filtered out by the kidneys, ending up in urine.
Bisphenol A enters the body through ingestion, inhalation, or dermal contact from environmental sources such as food containers, thermal paper, and dust.
Bisphenol A is rapidly absorbed across the gastrointestinal tract and, to a lesser extent, through the skin and lungs, entering systemic circulation.
Bisphenol A undergoes minimal hepatic metabolism, primarily glucuronidation, but a significant fraction remains unmetabolized and circulates in the blood.
Unmetabolized and conjugated forms of bisphenol A are filtered by the glomeruli in the kidneys and excreted in urine without significant reabsorption.
Evidence from Studies
Supporting (1)
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Contradicting (0)
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