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| | #redirect [[Those_darn_chemicals#Bioaccumulation]] |
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| '''Bioaccumulation'''[https://en.wikipedia.org/wiki/Bioaccumulation] - chemicals building in an organism because it can't break it down or excrete it faster than it is ingested.
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| '''Biomagnification'''[https://en.wikipedia.org/wiki/Biomagnification] - Roughly: if not only you eat the thing, but lots of things ''you'' eat (plants or animals) also eats the thing, it goes faster. It's more of the food chain making things a little worse.
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| Things that cannot be broken down will do very little to leave. We will typically know this as "don't eat or touch, ever".
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| Things that ''can'' be broken down, or moved out, are only bioaccumulative only if we ingest it faster than we can break down or move out.
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| Your body will still have a harder time than if you never put them in you, but it is unlikely to be the thing you'll die of.
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| For example,
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| * mercury
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| :: has varied negative effects
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| :: is excreted by many organism, but not very efficiently (half-life of two months or so in people), so any consistent exposure means deposits everywhere
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| :: is notably bioaccumulative in certain fish[https://en.wikipedia.org/wiki/Mercury_in_fish],
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| :: and therefore also in people that eat these fish regularly
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| :: and is why we really don't want mercury in our environment in general
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| * pesticides
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| :: most aren't bioaccumulative, meaning that they while ingesting them isn't good for you (potential interactions with the nervous system, the reproductive system, the endocrine system cancer, Alzheimer's Disease, ADHD, and in extreme cases birth defects)
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| :: ...they won't build up, so your levels should never be worse than what you eat in a short term
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| :: whether that is still enough to be bad depends a little on regulations, farming conventions, and eating habits
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| See also:
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| * [https://pubmed.ncbi.nlm.nih.gov/17477364/ Mechanisms of mercury disposition in the body]
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| * [https://www.urmc.rochester.edu/labs/rand/projects/methylmercury-metabolism-elimination.aspx Methylmercury Metabolism and Elimination Status (MerMES) in Humans ]
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| * [https://inchem.org/documents/cicads/cicads/cicad50.htm Elemental Mercury and Inorganic Mercury Compounds: Human Health Aspects]
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| * [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3988285/ Environmental Mercury and Its Toxic Effects]
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