What is Not a Xenobiotic: Understanding Endogenous Compounds
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5 min read
Over 1.3 million deaths worldwide each year are caused by environmental pollutants, which are a major class of xenobiotics. A xenobiotic is any chemical substance found within an organism that is not normally produced or expected to be present, making naturally occurring endogenous compounds the answer to what is not a xenobiotic. This distinction is fundamental to toxicology, pharmacology, and environmental science.